Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
COMEDK20269 May 2026Evening ShiftMathematicsTrigonometric EquationsActual

Suppose ' a ' and ' b ' are non-zero constants satisfying the following system of equations a ^3 x + b ^3 x = x x and a x - b x = 0 , then 2(a^6 + b^6) - 3(a^4 + b^4) + 1 =

Options

  1. A1
  2. B0
  3. C-1
  4. D2 ^2 x

Correct answer

B. 0

Step-by-step solution

Given the equation a x - b x = 0 , we have a x = b x . Substitute b x = a x into the first equation a ^3 x + b ^3 x = x x : a x ^2 x + (b x) ^2 x = x x a x ^2 x + a x ^2 x = x x a x ( ^2 x + ^2 x) = x x a x = x x Since a and b are non-zero constants, x 0 . Dividing by x , we get a = x . Similarly, substituting a x = b x into the first equation gives: (a x) ^2 x + b ^3 x = x x b x ^2 x + b x ^2 x = x x b x ( ^2 x + ^2 x) = x x b x = x x Dividing by x , we get b = x . Therefore, a^2 + b^2 = ^2 x + ^2 x = 1 . Now, eva

Practice Trigonometric Equations on Quantrex Academy →

More from Trigonometric Equations

The number of common solutions of the pair of equations 2 ^2 - 2 ^2 + 1 = 0 and 2 ^2 + 3 - 2 = 0 in the interval [0, 2 ] , is 2026The general solution of x + x = 2x + 2x is x = np or x = nq 3 + 6 for n Z then p : q = 2026Let x [0, 6 ] satisfy the equation x - x = -1 . If x = k ( 3 ) where k N , then find the number of possible values of k is ..... 2026If the equation 3 - ^2 = 1 4 and [0, ] , then the number of solutions is... 2026The general solution of the equation 2 = 1 is... 2026If 0 x 2 , then the number of values of x for which x - 2x + 3x = 0 is 2026If 4 - 2 = 2 , then = 2026If (p ) + (q ) = 0 and p q , then the general value of (where n is any integer) is... 2026 Full Trigonometric Equations list All COMEDK PYQs