functions question help pleaseeeeeeeeeeee
if f(x)=5x+3
find f-1(x)
the -1 is a power but i cant write it properly here....
is (X) 1 im really not sure...
find f-1(x)
the -1 is a power but i cant write it properly here....
is (X) 1 im really not sure...
It's an inverse function.
let y= 5x+3
solve for x by making it the subject
swap x for y
bang bang
let y= 5x+3
solve for x by making it the subject
swap x for y
bang bang
(edited 6 years ago)
the answer therefore is? im still dont get it sorry
Original post by Sammyboy1234
if f(x)=5x+3
find f-1(x)
the -1 is a power but i cant write it properly here....
is (X) 1 im really not sure...
find f-1(x)
the -1 is a power but i cant write it properly here....
is (X) 1 im really not sure...
Let fx=y make x the subject of the equation. Then put x in place of all the y u got after making x the subject.
Original post by AmmarTa
I like the bang bang, don't forget to finalise the answer by letting f-1(x) equal your new equation.
ahh yes
Original post by Sammyboy1234
the answer therefore is? im still dont get it sorry
i dont think im allowed to say
follow the steps i gave you
Original post by Sammyboy1234
the answer therefore is? im still dont get it sorry
Its not allowed to post answers on TSR. Sorry.
Original post by Sammyboy1234
the answer therefore is? im still dont get it sorry
i edited the steps, sorry i messed them up before
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