Question
evaluate the surface integral
double integral (y dS)
z= 2/3 (x^3/2 + y^3/2)
0 ≤ x ≤ 5, 0 ≤ y ≤ 2
double integral (y dS)
z= 2/3 (x^3/2 + y^3/2)
0 ≤ x ≤ 5, 0 ≤ y ≤ 2
Answers
∫∫<sub>S</sub> f(x,y,z) dS
we have f(x,y,z) = y
z = 2/3 (x^3/2 + y^3/2)
∂z/∂x = x^1/2
∂z/∂y = y^1/2
so the integral becomes
∫[0,5]∫[0,2] y √(x+y+1) dy dx
Looks pretty straightforward now, right?
we have f(x,y,z) = y
z = 2/3 (x^3/2 + y^3/2)
∂z/∂x = x^1/2
∂z/∂y = y^1/2
so the integral becomes
∫[0,5]∫[0,2] y √(x+y+1) dy dx
Looks pretty straightforward now, right?
I am having trouble taking the first integral. I get y^2/2 (x+y+1)^3/2 (1) is this correct? or do I take the integral of the inside instead of the derivative.
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