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April 26, 2015

Homework Help: Calculus

Posted by Britt on Monday, September 2, 2013 at 4:08pm.

Math questions, please help me? :(?
Find the composite functions f o g and g o f for the given functions.
f(x) = 10^x and g(x) = log x


State the domain and range for each:
f(x) = 4x + 1 and g(x) = x^2
f(x) = sin x and g(x) = x^2 - x + 1
f(x) = 10^x and g(x) = log x

If f = {(-2,-1), (-1,2), (0,6), (1,3), (2,-1), (3,-5), (4,0), (5,8)} and g = {(-2,6), (-1,5), (0,-8), (1,3), (2,9), (3,9), (4,0), (5,-2)}, then find f o g and g o f.

and how on earth would I figure this out?
By graphing the functions, determine the region where log2(x+3) > 2x.

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