Tolong dibantu.. 2-7 yang mana aja. pakai cara

2.f(x)=2x+4/3x-5

y=2x+4/3x-5

y(3x-5)=2x+4

3xy-5y=2x+4

3xy-2x=5y+4

x(3y-2)=5y+4

x=5y+4/3y-2

f^-1(x)=5x+4/3y-2

3.f(x)=5-3x/6x-2

y=5-3x/6x-2

y(6x-2)=5-3x

6xy-2y=5-3x

6xy+3x=5+2y

x(6y+3)=5+2y

x=5+2y/6y+3

f^-1(x)=5+2x/6x+3

4.f(x)=2x-3/4x+1

y=2x-3/4x+1

y(4x+1)=2x-3

4xy+y=2x-3

4xy-2x=-y-3

x(4y-2)=-y-3

x=-y-3/4y-2

f^-1(x)=-x-3/4x-2

f^-1(-2)=-(-2)-3/4(-2)-2

=2-3/-8-3

=-1/-10

=0,1

5.f(x)=3x+2/x-4

y=3x+2/x-4

y(x-4)=3x+2

xy-4y=3x+2

xy-3x=4y+2

x(y-3)=4y+2

x=4y+2/y-3

f^-1(x)=4x+2/x-3

f^-1(a)=4a+2/a-3=10

=4a+2=10(a-3)

=10a-30

=4a-10a=-2-30

=-6a=-32

=a=-32/-6

=a=16/3

Itu aja yg aku bisa….Gomen