Posted by **Anonymous** on Sunday, November 18, 2007 at 12:30am.

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^3-5x^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^3-5x^2+3x+k What would I plug in for x?

## Answer this Question

## Related Questions

- Calculus - Which of the following is a separable, first-order differential ...
- Differential Equations - The velocity v of a freefalling skydiver is well ...
- PLEEEEEAAAASE HELP WITH DIFFERENTIAL EQ PROBLEMS!! - 1) What are the equilibrium...
- Math - For x [–14,13] the function f is defined by f(x)=(x^3)(x+6)^4 On which ...
- Calculus - Solve the separable differential equation 10x−6ysqrt(x^2+1)dy/...
- Calculus - Solve the separable differential equation: dy/dt=4y^6 and find the ...
- calculus - determine whether the statement is true or false. If it is true, ...
- Calculus 2 (Differential Equation) - How would you solve the following problem ...
- Calculus - Second Order Differential Equations - Posted by COFFEE on Monday, ...
- Math - a weight of mass m is attached to a spring and oscillates with simple ...

More Related Questions