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If the tangent at (1, 7) to the curve x2 = y – 6 touches the circle x2 + y2 + 16x + 12y + c = 0 then the value of c is ______.
Concept: undefined >> undefined
The normal to the hyperbola `x^2/a^2 - y^2/9` = 1 at the point `(8, 3sqrt(3))` on it passes through the point ______.
Concept: undefined >> undefined
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The value of `lim_(x rightarrow 0) (sqrt((1 + x^2)) - sqrt(1 - x^2))/x^2` is ______.
Concept: undefined >> undefined
The value of `d/(dx)[tan^-1((a - x)/(1 + ax))]` is ______.
Concept: undefined >> undefined
Which of the following linear inequalities satisfy the shaded region of the given figure?

Concept: undefined >> undefined
A curve is represented by the equation x = sec2t and y = cot t, where t is a parameter. If the tangent at the point P on the curve where t = `π/4` meets 4 the curve again at the point Q, then |PQ| is equal to ______.
Concept: undefined >> undefined
The general solution of x(1 + y2)1/2 dx + y(1 + x2)1/2 dy = 0 is ______.
Concept: undefined >> undefined
The general solution of the equation tan θ + tan 4θ + tan 7θ = tan θ tan 4θ tan 7θ is ______.
Concept: undefined >> undefined
General solution of the equation sin 2x – sin 4x + sin 6x = 0 is ______.
Concept: undefined >> undefined
The equation of tangent to the curve y = `sin^-1 (2x)/(1 + x^2)` at x = `sqrt(3)` is ______.
Concept: undefined >> undefined
If the curves ay + x2 = 7 and x3 = y cut orthogonally at (1, 1), then the value of a is ______.
Concept: undefined >> undefined
Which of the following equation has no solution?
Concept: undefined >> undefined
The line 5x + y – 1 = 0 coincides with one of the lines given by 5x2 + xy – kx – 2y + 2 = 0 then the value of k is ______.
Concept: undefined >> undefined
If x = eθ, (sin θ – cos θ), y = eθ (sin θ + cos θ) then `dy/dx` at θ = `π/4` is ______.
Concept: undefined >> undefined
If the line y = 4x – 5 touches to the curve y2 = ax 3+ bat the point (2, 3) then 7a + 2b = ______.
Concept: undefined >> undefined
The number of principal solutions of tan 2θ = 1 is ______.
Concept: undefined >> undefined
The object function z = 4x1 + 5x2, subject to 2x1 + x2 ≥ 7, 2x1 + 3x2 ≤ 15, x2 ≤ 3, x1, x2 ≥ 0 has minimum value at the point is ______.
Concept: undefined >> undefined
The sides of a rectangle are given by x = ± a and y = ± b. The equation of the circle passing through the vertices of the rectangle is ______.
Concept: undefined >> undefined
The point on the curve y = `sqrt(x - 1)`, where the tangent is perpendicular to the line 2x + y – 5 = 0 is ______.
Concept: undefined >> undefined
The objective function of LPP defined over the convex set attains it optimum value at ______.
Concept: undefined >> undefined
