ellapetersene ellapetersene

13-11-2022
Mathematics

Answered

10 Dakarai thought of a number. He subtracted 11 from the number then divided the result by 4.
a Use a mapping to write this as a function.
Dakarai's answer was -1.2.
b Use inverse functions to work out the number Dakarai thought of. Show all your working.

Answer :

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