老外的帖子
Sure - it's easy if you have exponential and natural log functions.
Sincey = x^n
, you can take the natural log of both sides:
ln(y)= n*ln(x)
Then taking the exponential of both sides gives you what you want:
y = exp(n*ln(x))
If you want something better, the best place I know to look isAbramowitz and Stegun.