# Proof of limits with fraction

1. Oct 20, 2009

### joshua.sl

prove that limit of --- (x$$^{n}$$-a$$^{n}$$)
---------- ---------------- (x-a)
when " x " tends to " a "

equals to ---- n.a$$^{n-1}$$ ----- ****where " n " is a fraction..

we have been given this and i've got no idea on how to prove it although i can do sums with this equation when " n " is a fraction

PS this is my first post and i have no experience in witing equations in posts ..sorry if i've done any mistakes.

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