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#1 Help Me ! » multivariable calculus » 2006-02-03 14:32:43

hristo
Replies: 4

hi,

i have a question about multivariable calculus. Is it required to know linear algebra in order to take a m. calculus course?

#2 Re: Help Me ! » calculus, volume » 2006-01-13 16:55:49

ohh, ok.  thanks. i feel like a retard now. hehe

#3 Re: Help Me ! » calculus, volume » 2006-01-13 16:36:10

but what happens with the y = 1? i need it to find the limits. it can't be the upper limit because the graphs don't intersect there. they intersect when x = e in this equation: y = ln x, so the upper limit should be e. correct me if i am wrong and please tell me why i am wrong.

#4 Help Me ! » calculus, volume » 2006-01-13 15:57:36

hristo
Replies: 9

hi,

i have a problem with a volume question. it's the following:

Let R be the shaded region in quadrant 1  bounded by the graphs of y = ln x and y = 1.
find the volume of the solid generated by rotating R about the y-axis.

book-answer: pi/2 (e^2-1)

#5 Re: Help Me ! » derivative of an exponential function » 2005-12-26 19:11:25

and i have another problem which i can't solve:

y = (cos x )^0.7x

thanks

#6 Re: Help Me ! » derivative of an exponential function » 2005-12-26 18:54:52

omg i can't believe that i didn't think about that. sorry for doubting the answer

#7 Re: Help Me ! » derivative of an exponential function » 2005-12-26 15:30:34

hmm,

the answer in the book is

f' (x) = x^5 * 3^x *(5/x + ln 3)

#8 Help Me ! » derivative of an exponential function » 2005-12-26 13:18:25

hristo
Replies: 13

hi,

how do i solve the following problem:

f (x) = x^5 * 3^x

f' (x) = ?

thanks in advance

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