$27,200

If f(x) = ax – b and g(x) = cx – d, then when is fog(x) = gof(x)? I always get to the final solution but it doesn’t match either of these answers listed below

(a)       f(a) = g(c)       (b)       f(b) = g(d)       (c)       f(d) = g(b)

(d)      f(c) = g(d)       (e)       none of the above

how do you find the slope of the line tangent to the graph of y = lnx2 at x = e2