Mathematics questions and answers

Mathematics Questions and Answers

How good are you with figures and formulas? Find out with these Mathematics past questions and answers. This Test is useful for both job aptitude test candidates and students preparing for JAMB, WAEC, NECO or Post UTME.

3,586.

Find ∫(sin x + 2)dx

A.

cos x + x2 + K

B.

cos x 2x + K

C.

-cos x + x2 + K

D.

-cos x + 2x + K

Correct answer is D

∫(sin χ + 2)dχ = (∫sin χ + ∫2)dx
= -cos χ + 2χ + K

3,587.

If y = (2x + 1)3 find dy/dx

A.

3(2x+1)2

B.

6(2x+1)

C.

3(2x+1)

D.

6(2x+1)2

Correct answer is D

y = (2x + 1)3
dy/dx = 3(2x + 1)3-1 x 2
= 3(2x + 1)2 x 2
= 6(2x + 1)2

3,588.

What is the locus of point that is equidistant from points P(1,3) and Q(3,5)?

A.

y = -χ + 6

B.

y = -χ - 6

C.

y = χ + 6

D.

y = χ - 6

Correct answer is A

No explanation has been provided for this answer.

3,589.

An arc subtends an angle of 50o at the center of circle of radius 6cm. Calculate the area of the sector formed

A.

100/7

B.

80/7

C.

110/7

D.

90/7

Correct answer is C

Area of a sector = θ x πr2
360


= 50/360 x 22/7 x 36/1
= 110/7

3,590.

If two smaller sides of a right angled triangle are 4cm and 5cm, find its area

A.

10 cm2

B.

6 cm2

C.

24 cm2

D.

8 cm2

Correct answer is A

No explanation has been provided for this answer.