# Math

Redo problem 13 from section 1.8 of your textbook (page 62), but use the functions in the questions below rather than the functions in your textbook:
(a) In order to express the function y = 1311 x − 4, as a composition of two functions the outer of which is an exponential function,
we would let u be equal to the inner function, u = ,
and then write y as a function of u, as follows: y = .
(b) In order to express the function P = √{ 20 t5 + 1 }, as a composition of two functions the outer of which is a root function,
we would let u be equal to the inner function, u = ,
and then write P as a function of u, as follows: P = .
(c) In order to express the function w = 5 ln( −1 r− 10 ) as a composition of two functions the outer of which is a logarithmic function,
we would let u be equal to the inner function, u = ,
and then write w as a function of u, as follows: w = .

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