Question 1002240
{{{f(x)=7sqrt(x)}}}


find {{{f(f(x))}}}


{{{7sqrt(7sqrt(x))}}}


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Use rational exponents instead of radical symbolism.
{{{7(7*x^(1/2))^(1/2)}}}


{{{7(7^(1/2)*x^(1/4))}}}------probably does not display properly through this site.


{{{7*7^(1/2)*x^(1/4)}}}


{{{highlight(7^(3/2)*x^(1/4))}}}
This is in words, seven the the three-halves power, multiplied by x to the one-quarter power.