Question

1) Given that F(x) = -5+7x^2, find and simplify:

8F(x) =

F(8x) =

2) Find the domain of the function:

f(x) = -2x+12

q(v) = ^9sqrt(-3v+14)

f(x) = [(x-5)/(sqrt(15-x))]

B(y) = [7/(81-(1/y^2))]

Answer 1

1) multiply the funtion by 8 for 8F(x)

For f(8x) replace the x in the function with the (8x)

2) Domain is the values for x that can be used so that the function is defined.

We never want the square root of a negative number or division by zero because that will caust the funtion to be undefined.

Work these out and someone will check them for you.