Further Mathematics questions and answers

Further Mathematics Questions and Answers

Test your knowledge of advanced level mathematics with this aptitude test. This test comprises Further Maths questions and answers from past JAMB and WAEC examinations.

346.

p and q are statements such that \(p \implies q\). Which of the following is a valid conclusion from the implication?

A.

\(q \implies p\)

B.

\(\sim q \implies p\)

C.

\(\sim q \implies \sim p\)

D.

\(\sim p \implies \sim q\)

Correct answer is C

No explanation has been provided for this answer.

347.

The first term of a geometric progression is 350. If the sum to infinity is 250, find the common ratio.

A.

\(\frac{-5}{7}\)

B.

\(-\frac{2}{5}\)

C.

\(\frac{2}{5}\)

D.

\(\frac{5}{7}\)

Correct answer is B

\(S_{\infty} = \frac{a}{1 - r}\) (Sum to infinity of a GP)

\(250 = \frac{350}{1 - r} \implies 250(1 - r) = 350\)

\(350 = 250 - 250r \implies 350 - 250 = -250r\)

\(250r = -100 \implies r = \frac{-100}{250} = -\frac{2}{5}\)

348.

An arc of length 10.8 cm subtends an angle of 1.2 radians at the centre of a circle. Calculate the radius of the circle.

A.

12.6 cm

B.

12.0 cm

C.

9.6 cm

D.

9.0 cm

Correct answer is D

Length of arc (in radians) = \(r \theta\)

\(10.8 = 1.2r\)

\(r = \frac{10.8}{1.2} = 9.0 cm\)

349.

The gradient of point P on the curve \(y = 3x^{2} - x + 3\) is 5. Find the coordinates of P.

A.

(1, 5)

B.

(1, 7)

C.

(1, 13)

D.

(1, 17)

Correct answer is A

\(y = 3x^{2} - x + 3\)

\(\frac{\mathrm d y}{\mathrm d x} = 6x - 1 = 5\)

\(6x = 5 + 1 = 6 \implies x = 1\)

\(y = 3(1^{2}) - 1 + 3 = 3 - 1 + 3 = 5\)

\(P = (1, 5)\)

350.

Given that \(2^{x} = 0.125\), find the value of x.

A.

0

B.

-1

C.

-2

D.

-3

Correct answer is D

\(2^{x} = 0.125 = \frac{125}{1000}\)

\(2^{x} = \frac{1}{8} = 8^{-1}\)

\(2^{x} = 2^{-3}\)

\(x = -3\)