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REDMI NOTE 7S, AI DUAL CAMERA, 2021/12/23 20:44, -86, Senior Secondary School Mathematics for Class 12, -2, 20., 1., 1., 22., 21., 1., 1-x2, 2 V1- x2, |, -, 1, 1, 23., 26., 1., 24., 25., (1 +x²), 2., V1-x², V1 – x2, (x + 1), |, -1, 3, 30., 2., 27., 29., (1+x²), 28., (1 + x²), (x + )), -2, (1+x²), n-1, -1, 1., 31., (1+x²), 33., (1 + x2"), 2a²x, 34., Va² – x², -2e2x, 32., 38., 37., (a* + x*), a., 36., 2(1 + a²x²), 35., V1-a²x², (1 + e**), 1., 2Vx (1 + x) (1 + x²), -1, 41., 1., 40., (1+x²), 39., V1- 4x2, 1., 2vx (1+x), -2, 2., 44., 1+ 9x2 1+4x2, 42., 43., (1+4x²), 5., (1+25x²) (1 + 9x²), 2* +1 (log 2), 51., (1+ 4*), 45., 3., HINTS TO SOME SELECTED QUESTIONS (EXERCISE 2D), Put x cos 0 in Q. 13, 14, 15., Put x = sin 0 in Q. 16, 17, 18, 19, 20, 21, 22, 23, 24., Put x tan 0 in Q. 25, 26, 27; 28, 29, 30., Put x cot 0 in Q. 31, 32., Put x tan 0. 34. Put x= a sin 0., 35. Put a x = sin 0., %3D, 38. Put e = cot 0., Put a x tan 0. 37. Put x=a'tan 6., %3D, 41. y =, -1, -1 r-tan x., = tan, -1, 39. Put 2x cos 0. 40. y= tan a- tan x., %3D