Wednesday, November 30, 2011

Monday, November 21, 2011

Texas Instruments TI-89 Advanced Graphing Calculator

!±8± Texas Instruments TI-89 Advanced Graphing Calculator

Brand : Texas Instruments | Rate : | Price : $176.22
Post Date : Nov 21, 2011 10:23:52 | Usually ships in 1-2 business days


  • Over 500 KB memory for storing functions, programs, and data
  • Pretty Print technology displays mathematical expressions as they appear in textbooks
  • High-resolution display with split-screen views
  • Computes symbolic solutions to differential equations
  • Input/output port and cable; also supports optional TI-GRAPH LINK
  • Input/output port and cable, also supports optional TI-GRAPH LINK

More Specification..!!

Texas Instruments TI-89 Advanced Graphing Calculator

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Saturday, November 12, 2011

Texas Instruments TI-84 Plus Silver Edition Graphing Calculator

!±8± Texas Instruments TI-84 Plus Silver Edition Graphing Calculator

Brand : Texas Instruments | Rate : | Price : $89.00
Post Date : Nov 12, 2011 22:00:50 | Usually ships in 1-2 business days

The Texas Instruments TI-84 Plus Silver Edition Graphing Calculator allows to view an equation, its graph, and the coordinates all at one time. Jump from point to point by entering a number. Several useful plot types are available, including scatter, box-and-whisker, XY-line, histogram, and normal probability plots. Advanced statistics and regression analysis, graphical analysis, and data analysis are readily accessed, along with features for calculus, engineering, financial, logarithm, trigonometry, and hyperbolic functions--all crucial tools for advanced analysis. With its clear display and fast processing, the calculator incorporates graphing tools for mathematics and science course work, including statistics and finance. Thirty Apps are pre-loaded. For students in math and sciences, the TI-84 Plus Silver Edition is a powerful, problem-solving tool with features for storing, graphing, and analyzing up to 10 functions. Plus, it displays graphs and evaluates tables on a split screen, allowing you to trace the graph and scroll through table values simultaneously. The optional kickstand slide case is great for desktop work. The TI-84 Plus Silver Edition is powered by four AAA alkaline batteries (not included) , with an automatic shutoff to save energy. It is supported by a one-year limited warranty.

  • Graphing calculator handles calculus, engineering, trigonometric, and financial functions
  • USB on-the-go technology for file sharing with other calculators and connecting to PCs
  • 11 apps preloaded
  • Displays graphs and tables on split screen to trace graph while scrolling through table values
  • Backed by 1-year warranty

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Thursday, November 3, 2011

Texas Instruments TI-92 Plus Graphing Calculator

!±8± Texas Instruments TI-92 Plus Graphing Calculator

Brand : Texas Instruments | Rate : | Price :
Post Date : Nov 04, 2011 06:30:06 | N/A

Amazon.com Product Description With more power than most of us had in our PCs less than 20 years ago, the TI-92 Plus graphing calculator is the machine of choice for students and engineers both at the desk and on the go. It comes with over 500 KB of memory and software for working through algebra and other mathematic problems quickly and easily.

With the TI Graph Link accessory (not included), you can connect to computers and even download software upgrades. Solve linear and nonlinear equations, use the Pretty Print feature to see equations in textbook format, and work with 3-D surface graphs in real time. The QWERTY keyboard is rugged and easy to use, the 128 x 240 screen is easy on the eyes, and the calculator comes with a durable shell to protect its face when you're traveling or in the field. Additional accessories can turn the TI-92 into a mobile data-collection station, but it's just as useful at home.

Students beware: Some professors and teachers discourage, or even ban the use of calculators like the TI-92 in their classes, so make sure it's OK before you buy. Once you're set, the manual is clear and straightforward--you'll be programming in no time. Ultrageeks will love the assembly-language option, but the rest of us can get by just fine with the regular interface. The old timers might still cling to their slide rules, but anyone who needs a calculator for school or work can see why the Texas Instruments TI-92 is so popular: Its versatility, power, and portability give you the number-crunching power of a computer no matter where you are. --Rob Lightner

Pros

  • Powerful mathematics software
  • Easily upgradable
  • Handles advanced math well
  • Easy to read and use

Cons

  • Large size
  • Relatively high cost
  • May not be permitted for some classes or standardized tests

  • Over 500 KB memory for storing functions, programs, and data
  • Pretty Print technology displays mathematical expressions as they appear in textbooks
  • QWERTY keyboard and large display; real-time rotation of 3-D surfaces
  • Electronically upgradable using flash technology
  • Input/output port and cable; also supports optional TI-GRAPH LINK

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Wednesday, October 19, 2011

The Top 6 Calculator Apps For the iPhone

!±8± The Top 6 Calculator Apps For the iPhone

Our recent article on the top 6 calculator apps for Android was a big hit, and since then we've been getting search inquiries about iOS. You asked for it, and we are delivering. We've searched out Apple's app store for our favorite 6 calculator apps for the iPhone and iPod touch. Since there was a wide disparity in cost of apps, we set the ground rule that we were searching for apps that cost less than . In fact, this list turned out to be our favorite 6 iPhone calculator apps for under .

#1 Graphing Calculator+ by xNeat.com

Graphing Calculator+ is our pick for the best all around iPhone calculator app. It greatest strength is that it does so many different things well. A switch button takes you easily between the calculators different modes. Those modes are graphing, scientific, handwriting, a polynomial calculator, and linear equations calculator. There's still room for improvement. In particular, we wish the scientific calculator had fractions, and that the grapher had trace. But the app is simple and powerful, and the fact that it automatically finds max, min, intercepts, and intersection points pretty much makes up for the lack of trace.

Pros: Handwriting support, graphing scientific, quadratic and cubic solver, systems of linear equations

Cons: Handwriting mode not always accurate, decimals only

Cost: .99

#2 Graphicus by Serafim Chekalkin

We are huge fans of Graphicus. If only every graphing calculator were this easy to use. No need to read the user manual here, just jump right in. Graphicus brings you almost all the information you could want about Cartesian, polar, and parametrics graphs in an incredibly elegant interface. Trace, extrema, inflection points, tangent lines are all readily available with a few taps of your finger. On the downside, there is no simple scientific calculator. It's also a minor bummer that there's no 3D in an app that's 100% focused on graphing, but there's only one app on this list that has 3D.

Pros: Offers everything graphical, intercepts, trace, inflection points, max/min, complete

Cons: Just a grapher

Cost: .99

#3 Symbolic Calculator by Janos Barkai

If you need a CAS for your iPhone, this is the app for you. For those who have used a TI-89, you'll feel right at home with with Symbolic Calculator. The focus of this app is it's computer algebra system, and the interface is pretty easy to use for those familiar with Texas Instrument's CAS calculators. If you're new to CAS's, just tap the question mark next to a given command, and an example will pop up demonstrating how to use the syntax appropriately. You can also use this app to graph, although it feels a little counter-intuitive until you get the hang of it, and the graphing features are simplistic compared to some of the other apps on this list.

Pros: For a CAS, simple to use, offers example input for each

Cons: Graphing could be nicer, mathprint only after inputting

Cost: $.99

#4 Graph It by Tezmo

Another excellent grapher is Graph It. This is also full featured grapher, which offers the ability to trace, find intercepts, and roots, as well as graph derivatives and integrals. It also offers a full scientific calculator with two-line display. The user interface is ok, but might take some getting used to for some users, particularly for the scientific calculator mode.

Pros: Full featured grapher, also a full scientific calculator

Cons: UI takes a little getting used to

Cost: $.99

#5 Quick graph by Columbiamug

For those in need of a 3D graphing app, Quick Graph is the way to go. There are other positives here too such as a strong user interface, simple to use polar coordinates,and a good 2D graphing interface. Screen caps are another built in feature. The real selling point, though, is the 3D, which is well rendered and even accepts cylindrical and spherical coordinates. It is possible to use this app as a scientific calculator, but the interface feels a little strange.

Pros: Polar and 3D, screen caps of graphs

Cons: No trace features, don't feel designed for non-graphing calculation

Cost: Free

#6 Powerone LE by Infinity Softworks

Not everyone is looking for a fancy grapher. For those looking for a more standard scientific calculator, Powerone LE fits the bill. It's got a very intuitive interface that you'll pick up right away. Powereone also features unit conversion and a currency converter that stays current to international currency exchange rates. Additionally, its got a simple statistics calculator that finds the mean of a series of numbers. It could be better if the scientific features used a two-line interface.

Pros: Easy to use, nice UI, currency/unit converter, stays current, simple statistical analysis

Cons: One line calculation, no graphing

Cost: Free with option to upgrade to more powerful version for .99


The Top 6 Calculator Apps For the iPhone

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Wednesday, October 12, 2011

Five Golden Rules For Adding Polynomials

!±8± Five Golden Rules For Adding Polynomials

Golden rules are the ones that actually apply. You want to keep these things in mind and not forget them. Like stars to steer by, they are permanent markers to guide us and keep us moving in the right direction.

Whatever task you undertake, whatever goal you aspire to, you'll encounter Golden Rules to show you how, you just need to find them.

So let's get started with the 5 best ones for adding polynomials.

Golden Rule # 1, Add Like Terms. The reasoning for doing that this way is just as you add numbers together you can group like polynomials.. Remember, when you see something like 3x + 2y + 5x you can simplify by adding the like numbers together. So the equation becomes 8x + 2y.

Golden Rule # 2, Stack Vertically If You Need To. It will be best to handle this carefully because any miscalculation at the beginning will lead to an error at the end. Take into account that you can rewrite the numbers one on top of the other in the traditional way of adding numbers to make sure you get it right. Sure 3+5 is a piece of cake but if you end up with something like 1,357x + 769x + 6,892x it's best to stack them vertically..

Golden Rule # 3, Separate Your Degrees Of X. There are good reasons you'll want to do that. Among them are that these groups can not be added together. x is very different from x squared.

Golden Rule # 4, Don't be put off by lots of polynomials. There are various ways to do this, including just dealing with one group at a time. You may have 3 or 4 different groups but that's ok. Just add up one group at a time separately.

Golden Rule # 5, If at first you don't succeed try and try again. This may include asking for help if you do not know what you are doing wrong. It is important because doing so helps you to move forward and not get stuck at a single problem.

Follow these rules to adding polynomials and you will probably find life easier for you, your progress rapid as well as your successes more frequent.


Five Golden Rules For Adding Polynomials

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