How to fix the error message, "incorrect dimensions for matrix multiplication"?

Answer 1

[Star Strider]

I cannot run images of code, only code text.

The code needs to do element-wise multiplication —

x = 0:0.1:120;
p = 150;
e = 104000;
i = 4;
l = 120;
y = ((p*x.^2) / (6*e*i)) .* ((3*l)*x);
%                        ↑ ← HERE

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