•SOLVE uses Newton’s Method, so even if there are multiple solutions, only one of them will be returned.
•Newton’s Method can have problems obtaining solutions for the following types of functions.
-A periodic function (y = sin(x), etc.)
-A function whose graph includes a steep slope (y = ex, y =1/x, etc.)
-A discontinuous function (y = 'x, etc.)
Solution Screen Contents
Input equation
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•The “(left side) – (right side) form result” shows the result when the obtained solution is assigned to the solution variable. The closer this value is to zero, the higher is the precision of the obtained solution.
Continue Screen
SOLVE performs convergence a preset number of times. If it cannot find a solution, it displays a confirmation screen that shows “Continue: [=]”, asking if you want to continue.
Press =to continue or Ato cancel the SOLVE operation.
Appendix
<#017> Solve y = x2 – x + 1 for x when y = 3, 7, 13, and 21. (Solutions: x = 2, 3, 4, 5 when y = 3, 7, 13, 21 respectively)
*1 Assigns 3 to Y.
*2 Assigns an initial value of 1 to X.