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.
Find the derivative of \(y=\frac{x^7 - x^5}{x^4}\)
x(x2-1)
3x(x2-1)
3x2-1
7x6-5x4
Correct answer is C
\(y=\frac{x^7 - x^5}{x^4}\\
y = \frac{x^7}{x^4} \div \frac{x^5}{x^4}\\
y = x^3 - x \\
\frac{dy}{dx} = 3x^2 - 1\)
3/4
3/5
2/5
1/4
Correct answer is A
No explanation has been provided for this answer.
Find the gradient of a line which is perpendicular to the line with the equation 3x + 2y + 1 = 0
3/2
2/3
-2/3
-3/2
Correct answer is B
3X + 2Y + 1 = 0
2Y = -3X - 1
\(\frac{-3}{2}X - \frac{1}{2}\)
Gradient of 3X + 2Y +1 = 0 is -3/2
Gradient of a line perpendicular to 3X + 2Y + 1 = 0
\(=-1 \div \frac{3}{2}\\
=-1 \times \frac{-2}{3}=\frac{2}{3}\)
(2,5)
(5,2)
(1,0)
(0,1)
Correct answer is B
No explanation has been provided for this answer.
Find the capacity in liters of a cylindrical well of radius 1 meter and depth 14 meters
[π = 22/7]
44,000 liters
4,400 liters
440 liters
44 liters
Correct answer is A
V = πr2h
1m = 100cm
14cm = 1400cm
\(∴V = \frac{22}{7} \times \frac{100x100x1400}{1000}\\
= 44, 000 liters\)