MCQ
In the interval $[0, 1]$ , the function ${x^2} - x + 1$ is
  • A
    Increasing
  • B
    Decreasing
  • Neither increasing nor decreasing
  • D
    None of these

Answer

Correct option: C.
Neither increasing nor decreasing
c
(c) Let $f(x) = {x^2} - x + 1$, $f'(x) = 2x - 1$

Obviously $f'(0) = - 1$ and $f'(1) = 1$

Thus function is neither increasing nor decreasing.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

$\int {\frac{{xdx}}{{\sqrt {1 + {x^2} + \sqrt {{{\left( {1 + {x^2}} \right)}^3}} } }}} $ is equal to (where $C$ denotes constant of integration)
If $\tan \alpha = \frac{1}{7},\;\tan \beta = \frac{1}{3},$ then $\cos 2\alpha = $
A solid hemisphere is attached to the top of a cylinder, having the same radius as that of the cylinder. If the height of the cylinder were doubled (keeping both radii fixed), the volume of the entire system would have increased by $50\,\%$. By what percentage would the volume have increased if the radii of the hemisphere and the cylinder were doubled (keeping the height fixed)?
Let $S = \{\lambda ,\mu \} \in R \times R:f\left( t \right) = \left( {\left| \lambda \right|{e^{\left| t \right|}} - \mu } \right). sin \left( {2\left| t \right|} \right),t \in R$ , is a differentiable function . Then $S$ is a subest of?
$\mathop {\lim }\limits_{n \to \infty } \,\frac{{\sum\limits_{r = 0}^n {{{\tan }^{ - 1}}\left( {1 + r + {r^2}} \right)} }}{n}$ is equal to
If the domain and range of $f(x){ = ^{9 - x}}{C_{x - 1}}$ contains $m$ and $n$ elements respectively, then 
If $\int {\frac{{(2{x^2} + 1)\,\,dx}}{{({x^2} - 4)\,\,({x^2} - 1)}} = \log \left[ {{{\left( {\frac{{x + 1}}{{x - 1}}} \right)}^a}\,\,{{\left( {\frac{{x - 2}}{{x + 2}}} \right)}^b}} \right]} + C,$ then the values of  $a$  and  $b$  are respectively
If ${{a{x^2} + bx + c} \over {(x - 1)\,(x + 2)\,(2x + 3)}}$=${3 \over {x - 1}} + {2 \over {x + 2}} - {5 \over {2x + 3}}$, then
The mean and standard deviation of $20$ observations are found to be $10 $ and $2$. respectively. On respectively, it was found that an observation by mistake was taken $8$ instead of $12$. The correct standard deviation is
Let tangents drawn from point $C(0,-b)$ to hyperbola $\frac{{{x^2}}}{{{a^2}}} - \frac{{{y^2}}}{{{b^2}}} = 1$ touches hyperbola at points $A$ and $B.$ If $\Delta ABC$ is a right angled triangle, then $\frac{a^2}{b^2}$ is equal to -