Find the inverse of the function f(x) =2x-7.
Step 1) Replace f(x) with y: y= 2x - 7
Step 2) Switch around the x and y values: x = 2y - 7
Step 3) Solve to find y by itself: x = 2y - 7 x +7 =2y (x+7)/2 = y
Step 4) Replace y with the f(x) notation for the inverse function: f^-1(x) = (x+7)/2😁
ND
Related Maths GCSE answers
All answers ▸The area of a parallelogram is given by the equation 2(x)^2+7x-3=0, where x is the length of the base. Find: (a) The equation of the parallelogram in the form a(x+m)^2+n=0. (b) The value of x.
simply fully (2x^2 -3)^2 - (2x^2 + 2)^2
15 machines work at the same rate, 15 machines can complete an order in 8 hours, however 3 of the machines break down after 6 hours. The other machines continue until the order is complete. In total how many hours does EACH machine work? (3 mark question)
Solve the simultaneous equation 2x + y = 18 and x - y = 6