BITSAT2009MathematicsIndefinite IntegrationActual
If ( 2 x- x+ x+ x-2 d x ) (=A | x+ x-2|+B x+C ). Then the ordered triplet (A, B, ) is -
Options
- A( ( 1 2 , 3 2 ,-1 ) )
- B( ( 3 2 , 1 2 ,-1 ) )
- C( ( 1 2 ,-1, 3 2 ) )
- D( ( 3 2 ,-1, 1 2 ) )
Correct answer
B. ( ( 3 2 , 1 2 ,-1 ) )
Step-by-step solution
( aligned & d dx ( A | x + x -2|+ Bx + C ) &= A x - x x + x -2 + B &= A x - A x + B x + B x -2 ~B x + x -2 & 2= A + B or -1=- A + B ; =-2 ~B & A =3 / 2, ~B =1 / 2, =-1 aligned )