i have no clue how to do this problem. i need some help. Given a power function of the form f(x)=ax^n, with f ' (3)=18 and f ' (6)=72, find n and a .
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Originally Posted by jojoferni244 i have no clue how to do this problem. i need some help. Given a power function of the form f(x)=ax^n, with f ' (3)=18 and f ' (6)=72, find n and a . Find f'(x): Now apply both conditions to this to come up with a system of equations: Can you continue? --Chris
actually im stuck...can you help me please
Originally Posted by Chris L T521 Find f'(x): Now apply both conditions to this to come up with a system of equations: Can you continue? --Chris Originally Posted by jojoferni244 actually im stuck...can you help me please Note that 4*18=72 So we can see that the last equation is Thus, Can you take it from here? You will find an integer value for n. Then plug this into either equation and solve for a. --Chris
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