Question

How do you find the domain and range of `y=-3x^2-x+1`?

Answer 1

`x in mathbb(R)` and `y<=13/12`

Explanation:

It is clear that we can plug in all real number in our function
`y=-3x^2-x+1`
we get be diiferentiating with respect to `x`
`y'(x)=-6x-1`
`y''(x)=-6`
so we get
`y(-1/6)=13/12`
and we get
`y<=13/12`