The term application of derivatives refers to the term rate of changing in the quantities, increasing and decreasing functions, maxima and minima, and many other terms. The maxima and minima of the functions include the maximum and minimum values of the function that are present in the functions.
We have to assume that the f is a function differential in (a,b) where as closed in [a,b].
Application of Derivatives Sample Questions for Class 12
Question 1
Identify the intervals on which the given function is increasing and decreasing.f(x)=x^3+x^2-x
A. Increasing: (-oo, -1) uu (1/3,oo); decreasing: (-1, 1/3)
B. Increasing: (-oo, -1); decreasing: (-1, 1/3)
C. Increasing for all x
D. Increasing: (-1,1/3); decreasing: (-oo, -1) uu (1/3,oo)
Question 2
What is the derivative of f(x)=3x^3+2x^2?
A. f'(x)=9x^2+4x
B. f'(x)=3x^2+2x
C. f'(x)=0
D. f'(x)=12x^2+6x
Question 3
Find the intervals of increase and decrease for the following function. f(x) = sqrt(3x^2 - 9x + 6)
A. Increasing on (3/2,oo) and decreasing on (-oo, 3/2)
B. Increasing on (2,oo) and decreasing on (-oo,1)
C. Increasing on (3/2,oo)
D. Increasing on (2,oo)
Question 4
What is the approximate rate of change when x=(3/2)pi?
A. 0
B. -1
C. 1
D. -1/2
Question 5
On what intervals is the function f(x)=3x^3+2x^2 increasing or decreasing?
A. Increasing: (-oo,-4/9) uu (0, oo), decreasing: (-4/9, 0)
B. Increasing: (-oo,-4/9), decreasing: (-4/9, 0)
C. Increasing: (-oo,0) uu (-4/9, oo), decreasing: (-4/9, 0)
D. Increasing: (-4/9, 0), decreasing: (-oo,-4/9) uu (0, oo)