HP (Hewlett-Packard) 48gII Calculator User Manual


 
Page 6-7
‚í 1\‚í1@@OK@@
@SOLVE@ Solve equation
The screen will show the solution as follows:
Press ` to return to stack. The stack will show the following results in ALG
mode (the same result would be shown in RPN mode):
All the solutions are complex numbers: (0.432,-0.389), (0.432,0.389), (-
0.766, 0.632), (-0.766, -0.632).
Generating polynomial coefficients given the polynomial's roots
Suppose you want to generate the polynomial whose roots are the numbers [1,
5, -2, 4]. To use the calculator for this purpose, follow these steps:
‚Ϙ˜@@OK@@ Select Solve poly…
˜„Ô1‚í5 Enter vector of roots
‚í2\‚í 4@@OK@@
@SOLVE@ Solve for coefficients
Press ` to return to stack, the coefficients will be shown in the stack.