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underset(h to 0)"Lt" (root3(h+1)-1)/h=?...

`underset(h to 0)"Lt" (root3(h+1)-1)/h`=?

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`underset(h to 0)"Lt" (root3(h+1) -1)/h`
=`underset(z to 1)"Lt" (z^(1/3)-(1)^(1/3))/(z-1) = 1/3(1)^(1/3-1)` Let, h+1 = z
=`1/3 because h to 0`
`therefore z to 1`
h = z-1
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