Recently in HW help Category

Hope you're not too bogged down with the work (Well if you are waiting until the last minute: Shame on You!)

I received this email from one of you and I thought maybe some of you silent ones might have similar questions:
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> Hey Mr. Lemay,
> Just wonder how to do the following problems:
> 16-22 even, 36, 38, 39, 60,61, 63, and 67.
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My reply:

Dear STu Dent:

For 16 - 22:

I've given you the 4 function definitions. What these questions are asking you to do is to find the values of the these "composite functions"

For example if f(x) = 2x-1 and g(x) = the points {(1, 2), (2, 3), (3, 4)}

find (f+g)(2)

This means find f(2) = 2(2)-1 or 3 and g(2) = 3 and add the two numbers together.

OK?

36, 38, and 39 are just exponent properties. A good review/explanation can be found here:

http://www.purplemath.com/modules/exponent.htm

For 60 and 61. Points of intersection can be found by setting the two functions equal and solving for x and then back substituting for y.

Here is good explanation for 60 (a non-linear system)

http://www.purplemath.com/modules/syseqgen3.htm

For 61, try a graphing calculator only I want an exact answer, not a trace answer. Think about the work Mrs. B did you you around the Unit Circle and trig functions (When are Sin x and Cos x the same?)


For 63: Is 0/# = 0? Do we care about when x^3 = 0? Can we just worry about where x^4-1 = 0?

For 67: Take a look at this page: http://www.purplemath.com/modules/ineqrtnl.htm

Hope this helps. Give a yell if you need more help. I'll have you show me what you've tried.

Mr. L.

Here is the work that the AP Calculus class of 2011 needs to complete over the summer.

AP Calculus Summer 2010 Review Packet in PDF format. You need Adobe Acrobat Reader (link).

Students planning to take AP Calculus at Oxbow during the 2010 - 2011 School year must come to class the first day of class with this packet completed. I am available for questions this summer if you have any. Feel free to email me. 

Here is the URL.

http://connect.ctdlc.org/r20216246/

When you're asked to install Adobe Connect, do so. It is a quick browser based download.

I'll be there from 7-9:30 Saturday evening.


Remember that this is an academic college level resource and is not for fooling around.

Here are some old notes that may help. link

Any page references refer to an old precalculus text I used to use. You can ignore them.