OLOWE RUTH

5 Reputation

One Badge

4 years, 53 days

MaplePrimes Activity


These are questions asked by OLOWE RUTH

 I have been trying to run a code to plot a region of stability for a numerical method for solving IVPs. Apart from the fact that it is taking time to run, it is giving me errors: 'Error; (inplots/ implicitplot/factor) and  Error; (inplot/ iplot2d:-Levels ) could not evaluate expression' 

 Attached here is the code:

K=4

NULL

with(LinearAlgebra):

NULL

P1 := simplify(A1-ScalarMultiply(A3, z)-ScalarMultiply(A5, z^3)):

Error, (in plots/implicitplot/factor) invalid input: the following extra unknowns were found in the input expression: {P5[4]}

Error, (in plot/iplot2d:-Levels) could not evaluate expression

NULL

Download RAS(TDFFAM).mw

I'm trying to solve a system of differential equations and encountered this error: Error, (in fsolve) {f1[0], f1[1], f1[2], f1[3], f2[0], f2[1], f2[2], f2[3]} are in the equation, and are not solved for. How can this error be rectified?

Page 1 of 1