[" If "y=(x+c)/(1+x^(2))" where "c" is a constant,then when "y" is stationary,"],[xy" is equal to - "],[[" A "(1)/(2)],[" (B) "(3)/(4),(5)/(8)],[" (D) "(4)/(8)]]

If (x+c)/(1+x^2) where c is a constant , then when y is stationary , xy is equal to

Which of the following is not a solution of the equation 3x -4y = 8? (A) (4,1) (B) (8,4) (C ) (1,4) (D) (0, -2)

If x:y=4:5 , then (2x+3y): (8x-5y) is equal to :

((-1)/5)^5x\ ((-1)/2)^3 is equal to ((-1)/2)^8 (b) -\ (1/2)^8 (c) (1/4)^8 (d) (-1/2)^(15)

A normal is drawn at a point " (x_(1),y_(1)) " of the parabola " y^(2) - 16x " and this normal makes equal angle with both "x" and "y" axes,Then point " (x_(1),y_(1)) " is (a) " (4,-4) ," (b) " (2,-8) " (c) " (4,-8) " (d) " (1,-4) "

If ( x + 3 , 4 - y ) = ( 1 , 7 ) , then ( x - 3 , 4 + y ) is equal to ( a ) ( -2 , -3 ) ( b ) ( -5 , 1 ) ( c ) ( 3 , 4 ) ( d ) ( 1, 5 )

If y=x/(x+1)+(x+1)/(x) , then (d^(2)y)/(dx^(2)) at x = 1 is equal to a) 7/(4) b) 7/(8) c) 1/(4) d) (-7)/(8)

When simplified (x^(-1)+y^(-1))^(1-) is equal to xy( b) x+y( c) (xy)/(x+y) (d) (x+y)/(xy)