MCQ
The solution of $\frac{{dy}}{{dx}} = x\log x$ is
  • A
    $y = {x^2}\log x - \frac{{{x^2}}}{2} + c$
  • B
    $y = \frac{{{x^2}}}{2}\log x - {x^2} + c$
  • C
    $y = \frac{1}{2}{x^2} + \frac{1}{2}{x^2}\log x + c$
  • None of these

Answer

Correct option: D.
None of these
d
(d) $\frac{{dy}}{{dx}} = x\log x$ ==> $dy = x\log xdx$

==> $\int_{}^{} {dy = } \int_{}^{} {x\log xdx} $ ==>$y = \frac{{x^2}}{{2}} log\ x - \frac{{x^2}}{{4}} + c$.

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

If $f(x) = x\, {\tan ^{ - 1}}x$, then $f'(1) =$
The value of $'a' (a>0)$ for which the area bounded by the curves $y = \frac{x}{6}\, + \,\frac{1}{{{x^2}}} \, , y = 0, x = a$ and $x = 2a$ has the least value, is
Let $R_{1}$ and $R_{2}$ be relations on the set $\{1,2, \ldots, 50\}$ such that $R _{1}=\left\{\left( p , p ^{ n }\right)\right.$ : $p$ is a prime and $n \geq 0$ is an integer $\}$ and $R _{2}=\left\{\left( p , p ^{ n }\right)\right.$ : $p$ is a prime and $n =0$ or $1\}$. Then, the number of elements in $R _{1}- R _{2}$ is........
If $\left|\begin{array}{ll}2 & 4 \\ 5 & 1\end{array}\right|=\left|\begin{array}{cc}2 x & 4 \\ 6 & x\end{array}\right|$, then the possible value(s) of ' $x$ ' is/are
Statement-$1$ : The shortest distance between the skew lines $\frac{{x + 3}}{{ - 4}} = \frac{{y - 6}}{3} = \frac{z}{2}$ and $\frac{{x + 3}}{{ - 4}} = \frac{y}{1} = \frac{{z - 7}}{1}$ is $9$.

Statement-$2$ : Two lines are skew lines if there exists no plane passing through them.

If f : R → R is given by f(x) = x3 + 3, then f-1(x) is equal to:
  1. $\text{x}^\frac{1}{3}-3$
  2. $\text{x}^\frac{1}{3}+3$
  3. $(\text{x}-3)^\frac{1}{3}$
  4. $\text{x}+3^\frac{1}{3}$
The optimal value of the objective function is attained at the points.
  1. Given by intersection of inequation with y - axis only.
  2. Given by intersection of inequation with x - axis only.
  3. Given by corner points of the feasible region.
  4. None of these
The value of $\cot \left( {\sum\limits_{n = 1}^{19} {{{\cot }^{ - 1}}\left( {1 + \sum\limits_{p = 1}^n {2p} } \right)} } \right)$ is
If R is the largest equivalence relation on a set A and S is any relation on A, then:
  1. $\text{R}\subset\text{S}$
  2. $\text{S}\subset\text{R}$
  3. $\text{R = S}$
  4. None of these.
Let $f(x)$ be a positive function such that the area bounded by $y=f(x), y=0$ from $x=0$ to $x=a>0$ is $\mathrm{e}^{-\mathrm{a}}+4 \mathrm{a}^2+\mathrm{a}-1$. Then the differential equation, whose general solution is $y=c_1 f(x)+c_2$, where $c_1$ and $c_2$ are arbitrary constants, is :