Question

Suatu fungsi f dirumuskan f(x)=2x+5,bila f(m)=13 dan f(-3)=n. Tentukan nilai dari 2m+n..

Answer 1

f(x) = 2x + 5

f(m) = 13

2(m) + 5 = 13

2(m) = 13-5

2(m) = 8

m = 8/2

m = 4

f(-3) = n

2(-3) + 5 = n

-6 + 5 = n

-1 = n

2m + n =

2(4) + (-1)

8 -1 = 7

Answer 2

rumus fungsi =f(x)=2x+5

f(m)=2x+5=13

f(m)=2m+5=13

f(m)=2m=8

f(m)=m=8/2=4

f(-3)=2x+5=n

f(-3)=2(-3)+5=n

f(-3)=-6+5=n

f(-3)=-1=n

2m+n=2(4)-1

=8-1

=7

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