`(79^(2) - 9^(2))/(89^(2) - 9^(2)) = "_________"`

((6.4)^(2)-(5.4)^(2))/((8.9)^(2)+8.9xx2.2+(1.1)^(2))=

Evaluate : ((6.4)^(2)-(5.4)^(2))/((8.9)^(2)+(8.9xx2.2)+(1.1)^(2))

lim_ (n rarr oo) (tan (89.99 .... 9 ^ (@))) / (2tan (89.99 ... 9 ^ (@))) is equal to

The normal to the curve 2x^(2)+y^(2)=12 at the point (2,2) cuts the curve again at (A)(-(22)/(9),-(2)/(9)) (B) ((22)/(9),(2)/(9))(C)(-2,-2)(D) none of these

A point on the parabola y^2=18 x at which the ordinate increases at twice the rate of the abscissa is (a)(2,6) (b) (2,-6) (c) (9/8,-9/2) (d) (9/8,9/2)

A point on the parabola y^2=18 x at which the ordinate increases at twice the rate of the abscissa is (a)(2,6) (b) (2,-6) (c) (9/8,-9/2) (d) (9/8,9/2)

A point on the parabola y^2=18 x at which the ordinate increases at twice the rate of the abscissa is (a)(2,6) (b) (2,-6) (c) (9/8,-9/2) (d) (9/8,9/2)

The intercepts made on the axes by the plane the which bisects the line joining the points (1,2,3) and (-3,4,5) at right angles are a.(-(9)/(2),9,9) b.((9)/(2),9,9) c.(9,-(9)/(2),9) d.(9,(9)/(2),9,