मराठी
महाराष्ट्र राज्य शिक्षण मंडळएचएससी वाणिज्य (इंग्रजी माध्यम) इयत्ता १२ वी

Choose the correct alternative: The function f(x) = x3 – 3x2 + 3x – 100, x ∈ R is

Advertisements
Advertisements

प्रश्न

Choose the correct alternative:

The function f(x) = x3 – 3x2 + 3x – 100, x ∈ R is

पर्याय

  • increasing for all x ∈ R, x ≠ 1 

  • decreasing

  • neither increasing nor decreasing

  • decreasing for all x ∈ R, x ≠ 1

MCQ
Advertisements

उत्तर

increasing for all x ∈ R, x ≠ 1 

shaalaa.com
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 1.4: Applications of Derivatives - Q.1

व्हिडिओ ट्यूटोरियलVIEW ALL [3]

संबंधित प्रश्‍न

Price P for demand D is given as P = 183 +120D - 3D2 Find D for which the price is increasing


The function f (x) = x3 – 3x2 + 3x – 100, x∈ R is _______.

(A) increasing

(B) decreasing

(C) increasing and decreasing

(D) neither increasing nor decreasing


Find the intervals in which the function f given by f(x) = 2x2 − 3x is

  1. strictly increasing
  2. strictly decreasing

Find the intervals in which the following functions are strictly increasing or decreasing:

x2 + 2x − 5


On which of the following intervals is the function f given byf(x) = x100 + sin x –1 strictly decreasing?


Find the interval in which the following function are increasing or decreasing  f(x) = x2 + 2x − 5  ?


Find the interval in which the following function are increasing or decreasing  f(x) = 6 − 9x − x2  ?


Find the interval in which the following function are increasing or decreasing f(x) = 2x3 − 9x2 + 12x − 5 ?


Find the interval in which the following function are increasing or decreasing \[f\left( x \right) = \frac{3}{2} x^4 - 4 x^3 - 45 x^2 + 51\] ?


Show that f(x) = cos2 x is a decreasing function on (0, π/2) ?


State when a function f(x) is said to be increasing on an interval [a, b]. Test whether the function f(x) = x2 − 6x + 3 is increasing on the interval [4, 6] ?


Show that f(x) = tan−1 x − x is a decreasing function on R ?


Prove that the function f(x) = cos x is:
(i) strictly decreasing in (0, π)
(ii) strictly increasing in (π, 2π)
(iii) neither increasing nor decreasing in (0, 2π).


Find the value(s) of a for which f(x) = x3 − ax is an increasing function on R ?


Write the set of values of k for which f(x) = kx − sin x is increasing on R ?


Find the value of x, such that f(x) is increasing function.

f(x) = 2x3 - 15x2 + 36x + 1 


For every value of x, the function f(x) = `1/"a"^x`, a > 0 is ______.


The function f(x) = sin x + 2x is ______ 


For which interval the given function f(x) = 2x3 – 9x2 + 12x + 7 is increasing?


The function f (x) = 2 – 3 x is ____________.


Let f(x) = `x/sqrt(a^2 + x^2) - (d - x)/sqrt(b^2 + (d - x)^2), x ∈ R` where a, b and d are non-zero real constants. Then ______.


The interval in which the function f(x) = `(4x^2 + 1)/x` is decreasing is ______.


A function f is said to be increasing at a point c if ______.


Read the following passage:

The use of electric vehicles will curb air pollution in the long run.

The use of electric vehicles is increasing every year and the estimated electric vehicles in use at any time t is given by the function V:

V(t) = `1/5 t^3 - 5/2 t^2 + 25t - 2`

where t represents the time and t = 1, 2, 3, ...... corresponds to years 2001, 2002, 2003, ...... respectively.

Based on the above information, answer the following questions:

  1. Can the above function be used to estimate number of vehicles in the year 2000? Justify. (2)
  2. Prove that the function V(t) is an increasing function. (2)

Let f(x) = x3 – 6x2 + 9x + 18, then f(x) is strictly increasing in ______.


In which one of the following intervals is the function f(x) = x3 – 12x increasing?


The function f(x) = xex(1 − x), x ∈ R, is ______.


Let \[x_0\] be in the domain of a real-valued function \[f\]. When is \[f\] decreasing at \[x_0\]?


For \[f(x)=x^3-3x^2+4x\], what is \[f'(x)\]?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×