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# Knowledge wizard

### I am a B-tech IIIrd year student with proficiency in Mathematics and science. NTSE scholar and 97% in PCM in class 12 Test categories: CBSE all clasess and NTSE.

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Bhavesh Koranne
Posted on Sep 20, 2014 2:25 PM

Divya Jain
Posted on Jun 19, 2013 8:44 PM

If y = Asin(wt - kx) , where y & x are displacement , A is amplitude & t is time . then what are the dimensions of w & k.

Shiphrah
Posted on Jan 24, 2015 4:30 PM

hi mam. I wanted to get some preparation question for nstse exam. can u help me?

Bhavesh Koranne
Posted on Sep 20, 2014 2:24 PM

y = sin^(-1)(w t-k x) k = 0, t = 0, y = 0 Reduce[y == ArcSin[t w - k x], {k, t, w, x, y}, Integers] w = (k x sin(y))/t{value of W} Re(y) = pi/2 Re(y) = -pi/2 (d)/(dx)(sin^(-1)(w t-k x)) = -k/sqrt(1-(t w-k x)^2)

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