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Question Description
Suppose that the functions s and t are defined for all real numbers x as follows: s(x)=x-1 t(x)=3x+5. Write the expressions for (t*s)(x) and (t+s)(x) and evaluate (t-s)(1)
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Explanation & Answer
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s(x) = x-1t(x) = 3x+5
A) ( s * t )(x) means to multiply the functions:
(x-1)(3x+5)= 3x^2 -5x -8
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BmvyWnzrf
(4)
Cornell University
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