just a general question. How do i find the one sided limit as x approaches 0 algebraically?

Question

anonymous · Answer

Trace the graph /curve from the side of interest

amistre64 · Answer

plug in numbers closer and closer to zero and see what they tend towards; algebraically there are deltas and epsilons to contend with

amistre64 · Answer

$$\lim_{b->a}\frac{f(b)-f(a)}{b-a}$$

amistre64 · Answer

or some such definition

anonymous · Answer

:( im still lost... here's the question  $$\lim_{x \rightarrow -2+} (x/x+1)(2x+5)/(x^2+ x)$$ supposd to find the limit algebraically. There is no graph.

anonymous · Answer

18/(6)=3

anonymous · Answer

1

anonymous · Answer

$$\lim_{x \rightarrow -2+} (x/x+1)(2x+5)/(x^2+ x) = 1$$

anonymous · Answer

http://www.wolframalpha.com/input/?i=%5Clim_ {x+%5Crightarrow+-2%2B}+%28x%2Fx%2B1%29%282x%2B5%29%2F%28x^2%2B+x%29