Question

Find the limit of the function by using direct substitution. limit as x approaches three of quantity x squared plus three x minus one.

17
0
-17
does not exist

Answer 1

17

Explanation:

Given the limit of a function expressed as;

`\lim_(x \to 3) x^2 + 3x - 1`

Substitute x = 3 into the function to have;

`= 3^2 + 3(3) - 1\\= 9 + 9 -1 \\= 18 - 1\\= 17`

Hence the limit of the function as x tends to 3 is 17