If anyone can solve these problems, please help me.
If x^3 + 2x^(2)y - 4y = 7, then when x=1, dy/dx=?
What is the area of the region between the graphs of y = x^3 and y = -x-1 from x=0 to x=2?
What is the average value of y=x^(3) *squareroot of (x^4 + 9) on the interval [0,2]?