exam Maths Puzzle Numerical Ability

4 radical 6 + 3 radical 2 - 2 radical 5

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exam Other Question

35. Not involving y in expression of ( [1/y3) + y2]

(****Please note the first y is to the power of 3 and the second y is to the power of 2****)

Thank you in advance! Find formulas for (f(g(x)) if

f(x)={0 if x<0} {2x if 0<=x<=1} {0 if x>1}
and
g(x)={1 if x<0}{x/2 if O<=x<=1}{1 if x>1}