Friday

September 19, 2014

September 19, 2014

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

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 ...

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, ...

Math - a weight of mass m is attached to a spring and oscillates with simple ...

Calculus - Second Order Differential Equations - Posted by COFFEE on Monday, ...

Calculus - Please look at my work below: Solve the initial-value problem. y'' + ...

calculus - Given: y^2+h^2=1 Find h as a function of y. If expression for dy/dx ...

calculus - Given: y^2+h^2=1 Find h as a function of y. If expression for dy/dx ...