Calculus
posted by Anonymous .
Can you check my answer?
Solve the separable differential equation: dy/dx=(sqrt(x))/2y
y=(2/3)x^(3/4)
Let f be the function given by f(x)=x^35x^2+3x+k is a constant.
a) On what intervals is f is increasing? (oo,1/3), (3,oo)
b) On what intervals is the graph of f concave downward? (oo,10/9)
c)Find the value of k for which f has 11 as its relative maximum.
I am not sure on this one. Here is what I think I would start this one:
11=x^35x^2+3x+k What would I plug in for x?
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