Post #31

so this week, monday the juniors weren't there so I worked on corrections.
by the way, when am i going to get those back???
then tuesday we took the AP Non-Calculator Portion...it was almost like last week
&& wednesday we took the AP Calculator Portion...it was almost like last weeks one too!
thursday we got them back and decided to work on corrections, but since [as mentioned above] the test were almost the same, we didn't have very many questions!
today, FRIDAY, we had a going away party for our sub...THE FOOD WAS GREAT!..HA

so, let's go over some easier stuff...

Tangent lines:

The problem will give you a function and an x value. Sometimes they give you a y value; if not then you plug the x value into the original function and solve for y to get the y value. Next, you take the derivative of the function and plug in x to get the slope. After that, you plug everything into point-slope form.

First derivative test:

For the first derivative test, you are solving for max and mins and may be trying to see where the graph is increasing and decreasing. You take the derivative of the function and and set it equal to zero and solve for the x values (critical points). Then you set those points up into intervals between negative infinity and infinity. Then, you plug in numbers between those intervals to see if it is positive or negative.

Second derivative test:

For the second derivative test, you are solving to see whether the graph is concave up, concave down, or where there is a point of inflection in the graph. You take the derivative of the function twice and set it equal to zero and solve for the x values. You set those values up into intervals between negative infinity and infinity. You then plug in numbers between those intervals to see if it is positive or negative. If it is positive, it is concave up. If it is negative it is concave down. Where there is a change in concavity, there is a point of inflection.

QUESTIONS???

*i think i need to go over all the trig formulas so i can know them...
*i need to know the formulas for area and volume..etc
*big integrals
*the problems where you have to solve for c

SEE YALL MONDAY
HAVE A GOOD WEEKEND!
~ElliE~