k, so im stupid, n i got a graded assignment.....so help? oh, i also need to show the work....but if u dont show the work, answers are fine too, i can do it from there...

1. let f be the function given by f(x)=(2x-5)/(x^2-4)
a. find domain of f
b. find f '(x)
c. write an equation for the line tangent to the graph of f at the point (0,f(0)

2. let f be the function defined by f(x)=7-15x+9x^2-x^3 for all real numbers x
a. find the zeros of f
b. write an equation of the line tangent to the graph of f at x=2

3. let f be the function given by f(x) = (x^4-16x^2)^(1/2)
a. find the domain of f
b. describe the symmetry, if any, of the graph of f
c. find f '(x)
d. find the slope of the line normal to the graph of f at x=5

4. let f be the function given by f(x)= x/((x^2-4)^(1/2))
a. find domain of f
b. find f '(x)
c. find equation of the tangent line when x=4

5. let f(x)=(1-sin x)^(1/2)
a. what is domain of f?
b. find f(x)
c. what is domain of f '?
d. write an equation for the line tangent to the graph of f at x=0

6. let f be the function defined by f(x)=(x+sin x)/(cos x) for -[pi]/2<x<[pi]/2
a. state whether f is an even function or an odd function. justify your answer
b. find f '(x)
c. write equation of line tangent to graph of f at the point where x=0

yes, [pi] in problem 6 is the number pi......any help would be greatly appreciated

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Last edited by az0nd2r3 on 09-21-2002 at 09:27 PM

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you can do this all with the graphing calculator

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umm, yes, but im not allowed to use a calc....*supposed* to be done by hand....

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you don't know how to do derivitives?

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ni pour ni contre; ça m'est égal

"The weight of this sad time we must obey,/ Speak what we feel, not what we ought to say./ The oldest hath borne most; we that are young/ Shall never see so much, nor live so long."
King Lear (V.3.300-304)

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put it this way....im kinda stupid, lazy, etc, n im young......but as for specifics - what is an even/odd function....i forget...what is a 'normal line'?

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im failing pre cal

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ahh......its aiite....i already finished the assignment

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don't worry i suck at calc too.

Worst thing is, the teacher only counts in the tests. And i've bombed one, now i am pretty sure the same thing happened for the one i just took today. My ap calc grade is pretty much screwed.

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ni pour ni contre; ça m'est égal

"The weight of this sad time we must obey,/ Speak what we feel, not what we ought to say./ The oldest hath borne most; we that are young/ Shall never see so much, nor live so long."
King Lear (V.3.300-304)

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quote:

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Originally posted by Crazydeb8ter
you don't know how to do derivitives?

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haha, why didn't you just tell them how to do it victor? It's obvious they didn't know how to do it at the time. Or else they wouldn't have been asking...

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Last edited by PsychoSnowman on 10-08-2002 at 10:56 AM

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quote:

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Originally posted by PsychoSnowman


haha, why didn't you just tell them how to do it victor? It's obvious they didn't know how to do it at the time. Or else they wouldn't have been asking...

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__________________
ni pour ni contre; ça m'est égal

"The weight of this sad time we must obey,/ Speak what we feel, not what we ought to say./ The oldest hath borne most; we that are young/ Shall never see so much, nor live so long."
King Lear (V.3.300-304)

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