Blog 1.

I don't know if we have to say this or not but this is Lindsey Rodrigue.
So the first week of Calculus was not as hard as I was expecting it to be, haha. I pretty much understood everything we learned but on every section there were one or two problems that I had trouble with. The first thing we learned was section 1.2, and it was just about using a table to find limits. When using a table to find limits, they either give you x value numbers already and you plug them into your calculator, or you have to take the x approaching number and subtract or add it by these numbers: -.1,-.01,-.001,.001,.01,.1. Type the problem into y= (on your calc.) Then press 2nd Graph and a table should appear. Then you plug into the table, and you get your answers. Whatever the number approaches, that is the limit. **When a problem asks you to do something numerically, it means create a table.

Ex. 1:
Lim
X->4 x-4/x^2-3x-4

x: 3.9 3.99 3.999 4.001 4.01 4.1
f(x): .20408 .2004 .20004 .19996 .1996 .19608

The limit would be x=.2

**Alright now for something I didn’t understand. Something that I thought was kind of confusing was infinite limits. The ones that I’m having trouble with are probably really simple, but I don’t get exercise 1-4 on 1.5. I don’t understand how you find if x approaches infinity or –infinity. Also, I don’t know what you’re supposed to plug in for problems 37 and 39. (When it’s like numbers from the right or left) If anyone could help me, I would appreciate it.