Hi,

The question asks us the sketch the curve of y= 3x^3-10 for x E [2,4].

i've tried the usual way of finding interepts. For the y intercept i get the point (0,-10). The x intercept gives me x^3=10/3 which doesn't seem to help me for sketching purposes.

I then tried to find max and mins but when i let dy/dx = I keep getting the same coordinates as for the y intercept. Also tried getting point of inflection but get the same point again. Should I just sub in values for x and get their corresponding y values?