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1. Let f(x)=x^2−4x+3/x^2+2X-3   Calculate lim x→1 f(x) by first finding a continuous function which is equal...

1. Let f(x)=x^2−4x+3/x^2+2X-3   Calculate lim x→1 f(x) by first finding a continuous function which is equal to ff everywhere except x=1 .

2. Use the chain rule to find the derivative of the following function 5(−2x^3−9x^8)^12

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