Question

What is (f⋅g)(x)?

f(x)=x4−9

g(x)=x3+9



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(f⋅g)(x)=

Answer 1

Answer: x^7-9x^4+9x^3+81

Explanation:

there is the answer i did the test! hope it helps !!!!!!!!!!!!!!!!!!!!!!

Answer 2

The dot products of the two functions will be given as follows:
f(x)=x^4-9
g(x)=x^3+9
thus
(f*g)(x)
=(x^4-9)(x^3+9)
=x^3(x^4-9)+9(x^4-9)
=x^7-9x^3+9x^4-81
hence the answer is:
(f*g)(x)=x^7-9x63+9x^4-81