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**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?

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

**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)

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

y = (cos x )^0.7x

thanks

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

hmm,

the answer in the book is

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

**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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