Question

Suppose that the functions f and g are defined for all real numbers x as follows

f(x)=3x
g(x)=4x^2

Write the expressions for (f-g)(x) and (f.g)(x) and evaluate (f+g)(-2)

Answer 1

@agent0smith Got this?

Answer 2

Okay :P

f = 3x
g= 4x^2

so...
f-g = 3x - 4x^2

f.g means f times g, so,
f.g = (3x)(4x^2) ...now simplify it

f+g = 3x + 4x^2, now find (f+g)(-2) by plugging in x=-2.

Answer 3

which gives you 10

Answer 4

Yep.

Answer 5

thanks!