If P (x,y) be any point on ` 16x^(2) + 25y^(2) = 400` with foci ` F_(1) (3,0) and F_(2) (-3,0)` then ` PF_(1) + PF_(2)` is

If f(x,y) = 2x^(2) - 3xy + 5y^(2) +7 , then f(0,0) and f(1,1) is

The eccentricity of the ellipse 16x^2 + 25y^2 = 400 is

The vertices of the ellipse 16x^(2) + 25y^(2) = 400 are …………

The tangent at any point on the ellipse 16x^(2)+25y^(2) = 400 meets the tangents at the ends of the major axis at T_(1) and T_(2) . The circle on T_(1)T_(2) as diameter passes through

If f (x,y) =e ^(2x+3y) find 3f_(x) (0,0) - 2f_(y) (0,0):

IF f(x) =2x^2 +bx +c and f(0) =3 and f (2) =1, then f(1) is equal to

The eccentricity of the ellipse 16x^(2)+25y^(2)=400 is ……………… .

Let (x,y) be any point on the parabola y^2 = 4x . Let P be the point that divides the line segment from (0,0) and (x,y) n the ratio 1:3. Then the locus of P is :