# |২ -3x+] -| <६ |x-১y| < ४. 7|९६-X) x { |x || x-5| <१ १-X lxLlx-31 C1x-31 ६ clx-312 |x-३|८- C कैहहा

Question

Hi, I'm struggling to understand this whole problem. I did attempt to do #4 (not sure if it's right?), but as for #1-3 I have no idea where to even start. Thank you for your help!

This is the problems:

Let y(x) = ax2 + bx + c. The function y(x) is not invertible, however, like the function f(x) = x2 we can make some restrictions on its domain to make it invertible. Hint: Think of the example (x2) given above.

• Find the largest possible domain where y(x) is invertible
• Find its inverse function using this domain
• Check that it is indeed the inverse function by verifying the identity y−1(y(x)) =y(y−1(x)) = x
• Show limx→3 x2 −3x+1 = 1 using the definition of limit, that is, using ε and δ.