I want to create a function that I can plot

y1 = -10^(0.5.*x) + sin(x) * abs(x.^3 - 4.*x - 1);

Incorrect dimensions for raising a matrix to a power. Check that the matrix is square and the

power is a scalar. To perform elementwise matrix powers, use '.^'.

^ This is the error I am getting and I'm trying to fix it but I'm stuck.

Answer 1

[the cyclist]

You needed elementwise operations in several places that you did not use it:

x = 1:5;
y1 = -10.^(0.5.*x) + sin(x) .* abs(x.^3 - 4.*x - 1);
plot(x,y1)