Question # 1

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The value of x and y when (x + iy)2 = 5 - 4i

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x = 2, y = -1

x = -2, y = 1

x = 2, y = -i

x = 2, y = 2

The area between the x-axis the curve y =4x-x2 is :

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32/2

15

18

21

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0

1

2

3

The parabola y²= x is symmetric about

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x-axis

y-axis

Both x and y-axis

The line y = x

Period of cos 2x is ______

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If the angle between two vectors u and v is 0 orπ, then the vectors u and v are:

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Orthogonal

Collinear

Perpendicular

None of these

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When we expand (a + 2b)⁵then

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a⁵+ 10a⁴b + 40a³b²+ 80a²b³+ 80ab⁴+ 32b⁵

a⁵+ a⁴b + a³b²+ a²b³+ ab⁴+ b⁵

5a⁵+ 4a⁴b + 3a³b²+ 2a²b³+ 1 ab⁴+ b⁵

None

The third term in the expansion of (1+2x) is

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-2x2

-4x2

2x2

4x2

The solution set of the equation 4 cos²x - 3 + 0 is

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none of these

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