- #1
Gwozdzilla
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Homework Statement
If f(x) = ∫sin x0 √(1+t2)dt and g(y) = ∫3y f(x)dx, find g''(pi/6)?
Homework Equations
FTC: F(x) = ∫f(x)dx
∫ab f(t)dt = F(b) - F(a)
Chain Rule:
f(x) = g(h(x))
f'(x) = g'(h(x))h'(x)
The Attempt at a Solution
I tried u-substition setting u = tan(x) for the first dirivative with the limits of sine, and it got really weird and bad. I also tried trigonometric substition and I got a similar bad and ugly answer.
g'(y) = f(x) = ∫0sin x √(1+t2)dt
How do I take the second derivative of g(y)?