MCQ
The solution of the equation $x + \frac{1}{x} = 2$ will be
  • A
    $2, -1$
  • B
    $0, -1,  - \frac{1}{5}$
  • C
    $ - 1, - \frac{1}{5}$
  • None of these

Answer

Correct option: D.
None of these
d
(d) $x + \frac{1}{x} = 2\,\, \Rightarrow \,\,x + \frac{1}{x} - 2 = 0$ $(\because x \ne 0)$

==> ${x^2} - 2x + 1 = 0$

==>${(x - 1)^2} = 0$

==> $x = 1,1$.

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 $(11)^{27} + (21)^{27}$ when divided by $16$ leaves the remainder
Let the straight line $y=2 x$ touch a circle with center $(0, \alpha), \alpha>0$, and radius $r$ at a point $A_1$. Let $B_1$ be the point on the circle such that the line segment $A_1 B_1$ is a diameter of the circle. Let $\alpha+r=5+\sqrt{5}$.

Match each entry in $List-I$ to the correct entry in $List-II$.

$List-I$ $List-II$
($P$) $\alpha$ equals ($1$) $(-2,4)$
($Q$) $r$ equals ($2$) $\sqrt{5}$
($R$) $A_1$ equals ($3$) $(-2,6)$
($S$) $B_1$ equals ($4$) $5$
  ($5$) $(2,4)$

The correct option is

If the variance of observations ${x_1},\,{x_2},\,......{x_n}$ is ${\sigma ^2}$, then the variance of $a{x_1},\,a{x_2}.......,\,a{x_n}$, $\alpha \ne 0$ is
In a DABC, if angle C is obtuse, then:
Let $S$ be the sample space of all five digit numbers.If $p$ is the probability that a randomly selected number from $S$, is a multiple of $7$ but not divisible by $5$ , then $9\,p$ is equal to.
A vertex of square is $(3, 4)$ and diagonal $x + 2y = 1,$ then the second diagonal which passes through given vertex will be
If $^n{P_r}$=$ 720$.$^n{C_r},$ then $r$ is equal to
If $\cos^4 \theta +\alpha, \sin^4 \theta + \alpha$ are the roots of the equation $x^2+2bx + b = 0$ and $\cos^2 \theta + \beta, \sin^2 \theta + \beta$ are the roots of the equation $x^2+4x+2 = 0$ then find $b$ ?
If $\text{y}=\sqrt{\text{x}}+\frac{1}{\sqrt{\text{x}}},$ then $\frac{\text{dy}}{\text{dx}}$ at x = 1 is
For any set A, (A')' is equal to: