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already answered Q&A
[A]
-x/y [B] x/y [C] -1/2 [D] 1/2(1 - x2)
[A] -1 [B] -x-2 [C] x-2
[D] -1/x
[A] 1 [B] -1 [C]
x/y [D] -y/x
[A] -2y/x [B] -2x/y [C] -x2/y [D] x2/y
[A] -(2x + y)(2y +
x)-1 [B] (2y
+ x)(2x + y)-1 [C]
- (2y + x)(2x + y)-1 [D](2x + y)(2y +
x)-1
[A] - (2xy - 1)(1 -
2x2y)-1 [B] (2xy2 - 1)(1 - 2x2y)-1
[C] (1 -
2x2y)(2xy2 - 1)-1 [D](2xy - 1)(2xy2
-1)-1
[A] 6x2 + 2x [B] 2 + 12x [C] 6x2 [D] 12x
[A] 16x3 + 3x2 -
8 [B]16x3 +
3x2 [C]
16x3 + 6x [D]
48x2 + 6x
[A] 6x-4 [B] -6x-3 [C] -6x-4 [D] 2x-3
[A] 4 [B] 2x [C]
0 [D] 1
[A] 4(1 - 2x) [B] -4(1 - 2x) [C] 2(1 - 2x) [D] -2(1 - 2x)
[A] 3cos3x [B] 3cosxsinx [C] 3cos3xsin3x [D]3sin3x
[A] 6sin22xcos2x [B] 6cos2x [C] 2xcos2x [D] 6sin2xcos22x
[A] csinxcosx [B] c(sinx)c-1cosx [C]
c(cosx)c-1sinx [D] ccosx
[A] 5sin4xcosx [B] 5cosxsinx [C] 5cos4xsinx [D] 4sinx4cosx
[A] sin2x -
cos2x [B]
cos2x - sin2x [C] sinx - cosx [D] cosx - sinx
[A] 1 [B] 13 [C]
-1 [D] -13
[A] 0 [B] -6 [C]
1/2 [D] -1/2
[A] 1/x2 [B] 2/x [C] 2/x2 [D] 1/2x
[A] -2x(1 -
x2)-1 [B] (1 - x2)-1 [C] 1 - x2 [D] 2x(1 - x2)-1
[A] a = 2t2 - t [B] a = 3t2 - 4t [C] 3t2 - 4t + 1 [D] v/t
[A] -2sin2x [B] -2sin2xcos2x [C] -2cos2x [D] 2sin2x
[A] -2cosx sinx [B] -cos2x sin2x [C] -2cosx sin2x [D] 2sin2x cos2x
[A] (1 - 9x)-1/2 [B] 3(1 -
9x2)-1/2 [C] 9x2(1 + 9x2)-1/2
[D] 3(1 +
9x2)-1/2
[A] 24x(3x2 -
4)3 [B]
24x(3x2 + 4)3 [C] 24x(3x - 4)3 [D] 24x(3x2 - 4)4
[A] v [B] u [C]
-v [D] -u
[A] sin2x [B] sec2x [C] cos2x
[D]
cosec2x
[A] 2cosx + sinx [B] 2cosx - sinx [C] 2(cosx + sinx) [D] 2(cosx - sinx)
[A] -6x(1 - 2x)2 [B] -12x(1 -
2x2)4 [C] 12x(1 - 12x2)4 [D] 12x(1 + 12x)4
[A] 1/3 [B] 1 [C]
0 [D] 1/2
[A] 1 [B] 0 [C]
-1 [D] infinite
[A] 2/3 [B] 1/4 [C]
3/2 [D] 0
[A] tanx secx [B] tanx cosecx [C] cosec x [D] -tanx secx
[A] -cosecx cotx [B] tanh x [C] cosec x cot x [D] cosh x
[A] v2(1 +
9v2)-1 [B] v2(1 + 9v6) [C] 9v2(1 +
9v5)-1 [D] 9v2(1 +
9v6)-1
[A] -6(1 -
36x2)-1/2 [B] 6(1 - 36x2)-1/2 [C] (1 -
36x2)-1/2 [D] -1(1 - 36x2)-1/2
[A] (uv)dw/dx + (uw)dv/dx +
(vw)du/dx [B] (uv)dw/dx +
(vw)dv/dx + (vu)du/dx [C]
(uv)dw/dx + (uw)dv/dx + (v)dwu/dx [D] (uv)dw/dx + (uw)dv/dx - (vw)du/dx
[A] (vu' -
uv')v-2 [B] (uv'
- vu')v-2 [C]
(vu' - uv')2 [D]
(v' - u')v-2
[A] k [B] kx2 [C] 2k [D]
4kx
[A] 5 [B] 0 [C]1
[D] 5k
[A] infinite [B] x [C] 0 [D] x
+ &
[A] 3 [B] -3 [C]
-1 [D] 1
[A] y'(x) = a(1 -
x2)-1/2 [B] y'(x) = a(1 - ax2)-1/2 [C] y'(x) = a(1 +
x)-1/2 [D] y'(x)
= a(1 + ax2)-1/2
[A] y'(x) = a(a2 +
x2)-1 [B] y'(x) = a(a2 -
x2)-1 [C] y'(x) = a(a2 +
x2)-1/2 [D] y'(x) = a(a2 -
x2)-1/2
[A] yiv + m2y =
0 [B] yiv -
m2y = 0 [C]
yiv + m4y = 0 [D] yiv - m4y = 0
[A] 24 [B] 0 [C]
6 [D] 12
[A] 96 [B] 684 [C]
192 [D] 48
[A] & [B] 2 [C] -4 [D] -2
[A] ym =
p2y [B]
ym = -p2y' [C] ym = -p3y [D] ym = 3p3y
[A] y' + y = 0 [B] y'' + y = 0 [C] y' - y = 0 [D] y'' - y = 0
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