Find the limit of the function by using direct substitution.

limit as x approaches three of quantity x squared plus eight x minus two.

Question

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

anonymous · Answer

$$\lim_{x \rightarrow 3}(x^{2} + 8x - 2)$$

nnesha · Answer

$$\large\rm \lim_{x \rightarrow 3} ~~~x^2+8x-2$$ like this ??

nnesha · Answer

ohh okay cool. *direct substitution* just substitute   x for 3 and then solve. that's it.

anonymous · Answer

$$\lim_{x \rightarrow \frac{ \pi }{ 2 }}(2e ^{x}\sin x)$$

anonymous · Answer

i have to use direct substitution for this one as well

nnesha · Answer

alright same steps 
when the direction is *direct substitution * then just substitute x for the number its approaches by

anonymous · Answer

$$(2e ^{\left(\begin{matrix}\pi \ 2\end{matrix}\right)} \sin \frac{ \pi }{ 2 })$$

anonymous · Answer

how do i solve from there?

nnesha · Answer

sin (pi/2) = ??? you can use unit circle.

anonymous · Answer

equals 0