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Cos 1x + cos1 y =90 and tan1 x  tan1 y=0, find X2+ y2 +xy

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Write two different vectors having same direction

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What is the integration of root tanx dx

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2/3 [ (tan x)to the power 3/2 log  cos x  ] + cThanks (2)
X power 4 divide by x cubex square +x+1

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d/dx of (log+1)/(log+1)^2

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use quitent rule v d/dx u  u d/dx v//v^2Thanks (0)
If X=a sec^3x ,Y=a tan^3x find second derivatives?

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Take log of both sides n then do the differentiationThanks (0)
cbse 2017 12th exam expected

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FebThanks (0)
A[ adjA]=[80/08]find the value of mode A

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if the mapping f and g are given by f={(1,2),(3,5),(4,1)} and g={(2,3),(5,1),(1,3)} write fog

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(1,3),(3,1),(4,3)Thanks (2)
Differentiation of sin(3x+5)

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d/dx sin(3x+5) = cos(3x+5) *d/dx(3x+5) =3cos(3x+5)Thanks (1)
Find the particular solution of the differential equation dy/dx=x/c^2+y^2 given y=1 when x=0

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