Discover Questions

Find the Left Riemann Sum that approximates the area under the curve of y=e^(4x) on the interval [0,2] with 8 rectangles.? How to expect the range of following without graphing :
Sqrt(1-x^2)? Why is a test charge always very small? Given that a quantity Q(t) is described by the exponential growth function. Need you savvy people to help me out, see attached? If f(x)=2x+3,g0f(x)=2x-1 find f0g(2)?