If f(x) = 2x-3 and g(x) = x+1 find fog(3) and gof(-2)?
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jeew-m
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f(x) = 2x-3
g(x) = x+1
`f_og(3)` means that we get the value of f(x) when x = g(3)
g(x) = x+1
g(3) = 3+1 = 4
`f_og(3) ` = f(4) = 2(4)-3 = 5
`g_of(-2)` means that we get the value of g(x) when x = f(-2)
f(x) = 2x-3
f(-2) = 2*-2-3 = -7
`g_of(-2) ` = g(-7) = -7+1 = -6
Therefore;
`f_og(3) = 5`
`g_of(-2) = -6`
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salonigaba | Student
hi,
fog(3)=5
gof(-2)=-6
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