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pottersheep
Please help me...Really easy Limits questions A graph is defined by the equation y=f(x) a) Find the equations for the slop of the secant through points P(2,2) and q(x,f(x))
I got lim x-2/x-2 but apparently its lim f(x) - f(2)/x-2
if I know f(2) is equal to two, why cant I just sub itin?