Don't know where my code is wrong and how to fix it

Answer 1

[Star Strider]

The integrated result remains symbolic because ‘x’ is symbolic.

Example —

syms t x 
x2 = t^3;
F2 = sin(x);
q = F2*diff(x2,t)

q = 

intq = int(q,t,0,1)

intq = 

So double will fail unless there is a numeric value for ‘x’.

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