Question # 1

If the roots of x²+ ax + b = 0 are non-real, then for all real x, x²+ ax + b is

Choose an answer

Negative

Positive

Zero

Nothing can be said

If f(x) = x²- x then f(2) is

Choose an answer

4

6

2

0

cos (α-β) = cosαcosβ+ sinαsinβis true for all

Choose an answer

α>β> 0

α>β

β>α

None of these

Cos-1(x)=

Choose an answer

cos x

x

tan-1(-x)

Sec-1 (1/x)

The range of y = sin x is ______

Choose an answer

[1, -1]

[-1, 1]

[0, -1]

[-∞+∞]

Choose an answer

- cot 4x + c

cot 4x + c

tan 4x + c

- tan 4x + c

Choose an answer

I

14 I

0

None of these

(n + 2) (n + 1) n= ______

Choose an answer

The nth term of an A.P., is 12-4n. Its common difference is

Choose an answer

8

4

16

If Z₁= 1 + i, Z₂= 2+3i, then |Z₂- Z₁| = ?

Choose an answer

The law of of sines

The law of tangents

The law of consines

None of these

If either A = 0 or B =0,then Ax2 +By2 +2Gx +2Fy +c =0 represents a

Choose an answer

Circle

Hyperbola

Ellipse

Parabola

The synthetic division method is only used to divide a polynomial by

Choose an answer

quadratic equation

binomial

linear equation

monomial

Choose an answer

A function whose domain is a subset of natural numbers is called ______

Choose an answer

Identity function

Sequence

Onto function

Series

Choose an answer

0

1

-2

10

G is geometric mean between a and b if a, G, b is

Choose an answer

A.P.

G.P.

H.P.

None of these

The equation of the circle with centre (h, k) and radius r is

Choose an answer

(x+ h)²+ (y+ k)²= r²

(x+ h)²+ (y - k)²= r²

(x - h)²+ (y+ k)²= r²

(x - h)²+ (y - k)²= r²

Choose an answer

cos(3π/2 +θ) = _____;

Choose an answer

sinθ

cosθ

-sinθ

-cosθ

The function sine and Cosine have the closed internal as their range

Choose an answer

[1, 0]

[-1, 1]

[0, 1]

[-1, 2]

The unit vector along y-axis is

Choose an answer

none of these

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

Choose an answer

X = 2, y = -1

X = -2, y=1

X = 2, y = -1

X = 2, y = 2

If the roots of ax²+ bx + c = 0 (a > 0) be greater than unity, then

Choose an answer

a + b + c = 0

a + b + c > 0

a + b + c < 0

None of these

F(x) = x^xdecreases in the interval

Choose an answer

(0, e)

(0, 1)

(-∞,0)

None

Choose an answer

Conclusion

Implication

Antecedent

Hypothesis

If 2x +y + λ =0 is normal to parabola y2 =-8x,λ= _____

Choose an answer

12

8

24

-24

Let S_ndenote the sum of the first n terms of an A.P. If S_2n= 3 S_n: S_nis equal to

Choose an answer

4

6

8

10

Choose an answer

cos 3x + c

- cos 3x + c

Choose an answer

-1

0

1

undefined

More Classes

Other Links

Mathematics ECAT Pre Engineering Online Test MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer