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 Soumya Ranjan Bairishal's messages in the community
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IIT 2009  not subjective No Screening

Exam on 12 April 2009

Application form sale begins on 19 november 2008

Rate me if useful

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I will go for RCM
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fantastic...
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Thanx Magiclko.....
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just one or 2 Qs
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Question in R.D.Sharma, Vol-I (CBSE) page-18.63 Q.No.-36
The strength of a beam varies as the product of its breadth and square of its depth. find the dimensions of the strongest beam which can be cut from a circular log of radius a.

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use ILATE
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papu_srb@yahoo.co.in

srbairishal@gmail.com

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BRAVO !!!! Keep it Uppppp...

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1) y = 5log5(1+tanx)
y =1+tanx

differentiating both sides

dy/dx = sec2x  (read as sec square x)

2) y = logx(a)
= log a/ log x
differentiating both sides
dy/dx = x(log a)
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Question in R.D.Sharma, Vol-I (CBSE) page-18.63 Q.No.-36
The strength of a beam varies as the product of its breadth and square of its depth. find the dimensions of the strongest beam which can be cut from a circular log of radius a.

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