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Quick question for Calculus

Hello,

Attached is a question I would really like some help with.

Please could someone give me the steps of how to work through this, I have a number of similar questions which I can use the steps for.

Cheers!
Original post by Jerking My Gerking
Hello,

Attached is a question I would really like some help with.

Please could someone give me the steps of how to work through this, I have a number of similar questions which I can use the steps for.

Cheers!

Post some working/ideas - this is not the place for step-by-step solutions. If you can't see how to start, try evaluating 1x11+rx1tdt\frac{1}{x} \int^{1+rx}_1 \frac{1}{t} dt and comparing this with f(x).

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