Determine the infinite limit. lim x→-3 - x + 4 x + 3

This is the concept of calculus, we are required to calculate the following limit.

lim as x→-3 (-x+4x+3)

plugging our values in f (x) we get:

( - (-3) + 4 (-3) + 3)

=3-12+3

=-3

therefore:

lim as x←-3 f (x) = - 3