If y = 3 cos(x/3), find dy/dx when x = (3π/2)
...If y = 3 cos(x/3), find dy/dx when x = (3π/2)
1
-3
2
-1
Correct answer is D
y = 3cos(x/3)
dy/dx = 3x(1/3)x - sin (x/3)
= - sin x/3
But x = 3π/2 ∴ -sin(x/3) = -sin(3π/6)
= -sin (3 * 180)/6
= - sin 90
= -1
Find the distance between the points (12, 12) and (-12, -\(\f...
Determine the value of m in the diagram ...
One of the following statements is wrong. Which is it? ...
In the diagram, QRT is a straight line. If angle PTR = 90°, angle PRT = 60°, angle PQR = 30&...
Simplify (6 - x - x2) ÷ (x2 - 4) ...
What is the probability that an integer x,(1 ≤ x ≤ 20) chosen at random is divisible b...