Which equation is the inverse of y= 2x2-8

we have

Step 1

Exchanges the variables x for y and y for x

Step 2

Isolate the variable y

Square root both sides

Step 3

Let

therefore

the answer is

The inverse is equal to

you answer is a

step-by-step explanation:

answer: cos [   arcsin (3/5) - arccos (1/2) ] =

step-by-step explanation: × = 3/5 = 0.6--> x = 36.87 and x = 180 - 36.87 = 143.13 deg

cos y = 1/2 --> y = +- 60 deg a. cos (x - y) = cos (143.13 - 60) = cos 83,13  

=

0.12

b. cos (36.87 - 60) = cos (-23.23) = 0.92