I'm trying to take the integral with two variables being arrays and this error keeps popping up. I'm not sure if there is another way, or if im missing something. this is what i have put in the code.

syms x 

h = 0.5:0.1:5.0;
b = 0.5:0.1:5.0;
dA = (h./(b.^3))*x^3
Iy = int(dA*x^2,x,0,b)

Error using symengine
Invalid argument.

Error in sym/int (line 167)
   rSym = mupadmex('symobj::intdef',f.s,x.s,a.s,b.s,options);

Error in DanielleG_Assignment4_18 (line 16)
Iy = int(dA*x^2,x,0,b)

Answer 1

[Setsuna Yuuki.]

I think the upper limit of integral cannot be a matrix.

if you change

Iy = int(dA*x^2,x,0,b) %b is array 

the code works

syms x

h = 0.5:0.1:5.0;
b = 0.5:0.1:5.0;
B = 2; %limit of example
dA = (h./(b.^3))*x^3
Iy = int(dA*x^2,x,0,B) 

Answer 2

[David Hill]

Iy=h.*b.^3/6;%not a difficult integral, just do it yourself.