itzygutierrez2763
30.06.2019 •
Mathematics
Given f(x)=4x^2-9 and g(x)=2x+3 find each value given f(x)=4x^2-9 and g(x)=2x+3 find each value find each value 1. (f+g)(x) 2. (f-g)(x) 3. (fg)(x) 4. f(g(3)) 5. g(f(3))
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Ответ:
Given,
f(x)=4x^2-9
g(x)=2x+3
1.
(f+g)(x)=f(x) + g(x)
=4x^2-9+2x+3
=4x^2+2x-6
2.
(f-g)(x)=f(x)-g(x)
4x^2-9-2x-3
=4x^2-2x-12
when x=3, then,
f(3)=4×(3)^2-9=27
g(3)=2×3+3=9
5.
f(g(3))=f(9)=4×(9)^2-9
=312
5.
g(f(3))=g(27)=2×27+3=57
Ответ:
no but if u tell me the qustions i will try and soleve them :)
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