How can I write it correctly ???

Hey everyone,

How can I write that index and argument in a root?

Answer 1

[Stephen23]

 Y = 31 * ((1-X)./X) .^ (1/2.6)

or as long as every element of X is less than or equal to one:

 Y = 31 * nthroot((1-X)./X, 2.6)