જો $\frac{1}{x^4+x^2+1}=\frac{Ax+B}{x^2+x+1}+\frac{Cx+D}{x^2-x+1}$ હોય,તો $\cos^{-1}(A+B+C+D)=$

  • A
    $\frac{\pi}{2}$
  • B
    $0$
  • C
    $\frac{\pi}{6}$
  • D
    $\frac{\pi}{3}$

Explore More

Similar Questions

$\frac{4x^2+5}{(x-2)^4} = \frac{A}{(x-2)} + \frac{B}{(x-2)^2} + \frac{C}{(x-2)^3} + \frac{D}{(x-2)^4}$ હોય,તો $\sqrt{\frac{A}{C} + \frac{B}{C} + \frac{D}{C}} = $

જો બહુપદી $3x^5-6x^4+2x^3+4x^2-5x+8$ ને $x^2-2x+3$ વડે ભાગતા મળતું ભાગફળ અને શેષ અનુક્રમે $ax^3+bx^2+cx+d$ અને $px+q$ હોય,તો $ab+cd=$

જો $\frac{6 x^3+7 x^2+6 x-3}{(x-1)(x+3)\left(x^2+1\right)}=\frac{A}{x-1}+\frac{B}{x+3}+\frac{C x+D}{x^2+1}$ અને $n=A+B+C+D$ અને ${ }^{50} C_n={ }^{50} C_r$ હોય,તો $r$ ની કિંમત શોધો.

જો $\frac{1-x+6x^2}{x-x^3} = \frac{A}{x} + \frac{B}{1-x} + \frac{C}{1+x}$ હોય,તો $A$ ની કિંમત શોધો.

જો $\frac{1}{x(x + 1)(x + 2)...(x + n)} = \frac{A_0}{x} + \frac{A_1}{x + 1} + \frac{A_2}{x + 2} + .... + \frac{A_n}{x + n}$ હોય,તો $A_r = $

Vedclass Products

For Students

Vedclass Test Series

Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.

Start Free Trial
For Teachers

Exam Paper Generator

Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.

Try Free
For Institutes

Online Exam Module

Live online exams with unlimited students, 360° analytics & white-label branding.

See Demo