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Forum: General Questions - High School/Secondary
Welcome to the General Questions - High School/Secondary forum!
For discussing questions from any discipline at high school/secondary school level.

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jump to page: << 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 >> of 53 (262 items)

Simple Integration of sin(2x) by gruja_sk on 2008-03-14 03:39:56
Hi

My question is can the integral of sin(2x)=-cos(kx)/k be equivalent to -cos(x)? Can someone explain to me if I'm wright or wrong.

Go easy on me I'm still in high school.

Thanks

 
[ reply | up ]
Projecting two non-parallel lines until they meet by Stropharia on 2008-03-06 02:11:20
Hi,

this ostensibly seems to be a simple problem, but i'm not sure how to go about solving it.

I'll present a simplified, hypothetical example:

I have two non-parallel lines, lets say of length 3 and 5 (in whatever units). I also know the distances between all four end points of the lines - and therefore the angles of the polygon that could be made by joining the line ends together. What I want to do is project both lines until they meet, then calculate the angle between the lines at the point at which they meet. Ideally, I would also know the length of the projected sections along each line. Is possible? Any suggestions would be greatly appreciated.

Thanks.

Steve
[ reply | up ]
Infinite series in integration by curious on 2008-02-06 13:53:58
How can I find integrals (for example recurring integrals) in terms of infinte sum notation??

Example.. What is the integral of e^(cos x) dx ???
How to find the answer in terms of infinte power series?

Thanks
[ reply | up ]
a cone and its vertex angle by perucho on 2008-01-31 21:29:28
Constructing a right circular cone by using a semicircle of radius "2R", what's its vertex semiangle?
[ reply | up ]
challenge integral by curious on 2008-01-29 07:45:33
Evaluate integral e^(cos x) dx

Also what is integral (x^2 + 1)^n dx , where n is a constant
[ reply | up ]

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