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A Calculator That Can Solve for X

Solving for X is not complicated. But it always takes work not to get stuck in the maze of algorithmic inputs and outputs. Once you gain a familiarity of the process, you can skip through the maze and reach X quickly.

Thanks loads for this very informative example. I recently purchased a Casio fx-991EX through Amazon because my previous calculator, a Casio FX-115 ( the for-runner of this one) died after 20 years. The documentation that comes with the Fx-991EX is not the best. I’ve been trying for several days to solve even the simplest quadratic equations with no success. They wanted me to enter the data using a “Coeffiicent editor” which was complex. I was on the verge of returning my calculator back to Amazon before my 30 days return period ran out. Then I got the idea of googling online to see if anyone else had a similar problem. I found your example ONLINE and no longer am planning to return my calculator.

If you want an entry such as 1/2 to be treated as a fraction then enter it as (1/2). For example, in the equation 4 divided by ½ you must enter it as 4/(1/2). Then the division 1/2 = 0.5 is performed first and 4/0.5 = 8 is performed last. If you incorrectly enter it as 4/1/2 then it is solved 4/1 = 4 first then 4/2 = 2 last. 2 is a wrong answer. 8 was the correct answer. For nested parentheses or brackets, solve the innermost parentheses or bracket expressions first and work toward the outermost parentheses. For each expression within parentheses, follow the rest of the PEMDAS order: First calculate exponents and radicals, then multiplication and division, and finally addition and subtraction. (Source: www.calculatorsoup.com)

To solve this problem, you first isolate your variable. As before, all you need to is to isolate your variable. You don't have to evaluate any of the expressions as you do this. All you are doing is moving your numbers around. When you are done isolating your variable, then your calculator can help you find your answer. You get this:

Also, you might need to use the inverse trig functions to solve problems. Some calculators have the inverse trig functions as actual buttons if not secondary functions of the trig buttons. Other calculators have a simple inverse [inv] button that you can push. To use the inverse button, you push the [inv] button first, and then you push the trig function that you want the inverse of. So, if you needed the inverse tangent function, you would push your degree value, then [inv], then [TAN]. In some other calculators, you will push [inv], then [TAN], and then your degree value. It's important to get to know your calculator, and this is why testing centers tell you to bring a calculator you are familiar with!Maple Calculator is a powerful math solver and versatile math learning tool that gives you answers, 2-D and 3-D graphs, and even step-by-step solutions! Whether you are doing simple calculations or working on university-level math problems, Maple Calculator can do it all. Use Maple Calculator to solve algebra problems, calculate the derivative or integral of a function, perform matrix manipulations, explore 2-D and 3-D graphs, and so much more! (Source: www.maplesoft.com)