When we do differentiation, the first we may have learnt would be the power rule.

\((x^n)'=nx^{(n-1)}\)... we can already remember with the back of our hand ... but why does it work?

In other words, proof it. And try not to use other resources...

When we do differentiation, the first we may have learnt would be the power rule.

\((x^n)'=nx^{(n-1)}\)... we can already remember with the back of our hand ... but why does it work?

In other words, proof it. And try not to use other resources...

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