Diketahui f(3X+1)=6x+3.tentukanlah a) rumus fungsi f(x),b) nilai 3f(-2),c) nilai t jika f(5t)=1
F(3x+1) = 6x+3
a.
f(x)= (6x+3 : 3x+1) x
f(x)= 3x
b.
3f(-2)
=3 . 3(-2)
=3. (-6)
=-18
c.
f(5t)=1
3(5t)=1
15t=1
t= 1/15
Diketahui f(3X+1)=6x+3.tentukanlah a) rumus fungsi f(x),b) nilai 3f(-2),c) nilai t jika f(5t)=1
F(3x+1) = 6x+3
a.
f(x)= (6x+3 : 3x+1) x
f(x)= 3x
b.
3f(-2)
=3 . 3(-2)
=3. (-6)
=-18
c.
f(5t)=1
3(5t)=1
15t=1
t= 1/15