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Re: How do I get the fx-115es to solve this equations...
You type in this equation (you enter letter A by pressing ALPHA and then 1st button in 4th row, and you enter = by pressing ALPHA and then CALC). Finally you press SHIFT and then CALC.
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What are d3 and d2? Why don't you clean the equation a bit? It will help you see it better. This calculator, it is not able to solve polynomial equations of degree higher than 3.
Your scientific calculator is unable to solve complex equation with complex coefficients. You should try to solve by hand directly using the quadratic formula or by factoring the polynomial in z failing that, another way would be to set z=x+iy, substitute this for z, carry out the algebra and try to separate real and imaginary parts. But your two equations will constitute a system of two quadratic equations. I am not aware of any general method to solve coupled nonlinear equations. Good luck.
You do not need a calculator for this proportion. For a proportion a/b=c/d, the product of the extrems (a*d) is equal to the product of the means (b*c). In your case x*x=8*8 or x^2=64. The two solutions are x=+square root (64) or x=-square root(64).
For a less trivial equation, you can use the solve feature of the FX-119ES. To do so, use the ALPHA keyboard to enter your equation; once the equation is typed in, do not press the main equal sign, but the Solve key (the key is located near the top left corner of the keyboard). You will be prompted to solve for X?.
Do you really need a calculator to solve a linear equation? Let us see how to solve it without a calculator. Remove the parentheses fronm the second term on the left : y-3 Use the distributive property on the last term on the right side -2y-6 Take the term -3 to the right side, changing its sign in the process (becomes +3) Take the -2y term to the left making it +2y. 3y +2y=18+3-6 or 5y=15 and the answer is straightforward .
As to your Casio FX300ES, it cannot solve equations because it does not have an EQUATION calculation mode. The Casios FX-115ES and FX-991ES have an Equation Mode. If you use any of the two to solve an equation in one variable (linear, quadratic or other) the unknown is taken to be x by default. You would have to change the name of the variable from y to x.
Press key Mode, first select option 5:EQN (by pressing key 5), then option 2: a_nX+b_nY+c_nZ=d_n (by pressin 2). Now input coefficients from equations in table (each column is for one variable), just type in number and press =, then use arrows to move to another cell.
Look at the top left corner of the keypad. If you have a = sign marked on the f ace of the calculator (near a CALc or Solve key) you can enter the = by pressing [ALPHA] then the key next to which there is an = sign. If you do not have that second = sign, you cannot enter it. The FX-115ES and the FX-991ES do have that sign to allow the user to enter equations. In your calculator you only have three calculational modes: the general COMP mode, the STAT mode and the Table Mode. No equation mode. Sorry.
Set Computational mode to EQN by pressing [MODE][5:EQN] Select the type of equations you want to solve Select the relevant otion and get ready to type in the coefficients (the a's, the b's, the c's etc`.)
For more general non-linear equations, use the SOLVE feature.
It depends on the degree of the polynomial. If polynomial is od degree 2 or 3 you can use the EQN mode (the equation MODE) by pressing [MODE][5:EQN] to enter Equation mode then press [3] for quadratic polynomial or [4] for a cubic one. You will then be prompted for the various coefficients. The canonical form of these polynomials is aX^2 plus bX plus c= 0, and aX^3 plus bX^2 plus cX plus d=0.
If polynomial is of degree higher than 3, or for a general non-linear equation you must use the Solve( feature. See example #017 on page 6 of the appendix to the manual.
What do you mean by "solve a matrix"? Find the inverse? Find the determinant? Find the solution to a system of linear equations? Within limits the fx-115ES can do any of these and more.
The procedures are described in the "Matrix Calculations" section of the manual. If you still have problems, please reply to this post specifying what you want to do.
Hello,
You must first eliminate the denominators by reducing the different expressions to the same denominators. Use the distributivity property of multiplication to expand your terms. Gather similar monomials. Do all the cleaning to reduce your equation to one of the 2 types that the calculator can handle.[Mode][5:EQN] [3: ax2+bx+c] or [4:ax3+bx2+cx+d]
Remember :Any solution that makes one of the original denominators equal 0 must be rejected.
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