stan x + tan a dx = A(x) cos2a + B(...
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stan x + tan a dx = A(x) cos2a + B(x) sin20. + Q.87 Let aelo, be fixed. If the integral tan x-tan a where Cis a constant of integration then the functions A(x) and B(x) are respectively (1)x and loge/sin(x+a) (2) x - a and loge cos(x-a)| T3) x-a and log.sin(x -a) (4) 2x and log.sin(2x) Q.88 Let S be the set of all ER such that the equation, cos 2x + a sin x=20-7 has a solution. Then : equal to (4)[1,4] 1) [2,6] (2)[3,7] (3)R sin x + COS X) Q.89 The derivative of tan " sin x = cos x), with respect to ž, where (re(0.) is 2012 (4) (2) 1 Q.90 Let f(x) = 5-X – 2 and g(x) = |x+1, XER. If f(x) attains maximum value at a and g(x) attains (x - 1) (x2 – 5x + 6) is equal to minimum value at B. then Lim x->-uß x2 - 6x +8 (3) 3 ota

JEE/Engineering Exams
Maths
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( frac{text { Sinmeceenn }}{text { Einmecoom }}= ) Aaux ( left.right|_{2} ) ( sin left(left.tan xright|_{0}right)=left.xright|_{2} ) ( therefore ) derivatere ( : f x_{2} ) wirt tox ( / 2 ) 2
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