Recent content by Psichlohomeo

Please assist me in my retardation. :( It is immensely painful.

Oh. It's not a function because y = -x^2 + 8 ?

1. X^2 + y = 8 Homework Equations 3. my steps: y = 8 - x^2 x^2 = 8 - y (8-y) + y = 8 Not a function. My logic is, because the equation does not equal y, it is not a function Please show me step by step the right answer, and preferably the reason why.

Alright, for my first problem I've reworked it to (-3, infinity)

Also, how can I find the domain of f o g when f(x) = log(x-1) and g(x)=x/16-x^2? For the domain of f(x), I put x>2 (??) and g(x) cannot equal +/- 4. I got this strange answer: (-1+rad65/-2 , -4) (-4, -1-rad65/-2)(-1-rad65/-2 , 4) Thank again. :)

Ah. So, [e^-5, 0)(0, e^5]?

1. Find the domain of f(g(x)) where f(x)= radical 25-x^2 and g(x)= ln(x+3) 2. For the domain of f I got x < or equal to +/- 5 and for the domain of ln(x+3) I got x+3 > 0 3. (0, 145) Thanks for your time. :P