Q21. Pole of a function is a point where the function becomes:
A Maximum
B Zero
C Unbounded
D Discontinuous
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Correct answer: Unbounded
Q22. The minimum value of 4 cosθ + 3 is
A –3
B –1
C 0
D 1
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Correct answer: –1
Q23. The angle of intersection of the curves y = 4 – x2 and y = x2 is
A –1 2 tan 7
B –1 4 2 tan 7
C –1 3 2 tan 7
D 2/π
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Correct answer: –1 4 2 tan 7
English UPPSC Polytechnic Lecturer 2021 (I)
Q24. The shortest distance between the parabola y=x2 and the straight line x–y=5 is-
A 19 2
B 2/8
C 19/8
D 19 2/8
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Correct answer: 19 2/8
Q25. The radius of curvature of the curve s = a log tan π ψ + 4 2 is –
A a tanψ
B a secψ
C a sec2/ψ
D a secψ tanψ
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Correct answer: a secψ
Q26. If the normal to curve y = f(x) at the point (a, b) makes an angle 3 4 π with the positive x axis then f'
A 1
B –1
C a/b
D b/a
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Correct answer: 1
Q27. The line y = mx + 1 is a tangent to the parabola y2 = 4x, if
A m = 1
B m = 2
C m = –1
D m = –2
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Correct answer: m = 1
Q28. Asymptotes of the curve x2 y2 = a2 (x2 + y2) are–
A x = 0, y = 0
B x = ± a, y = 0
C x = 0, y = ± a
D x = ± a, y = ± a
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Correct answer: x = ± a, y = ± a
Q29. If y = 4x – 5 is equation of the tangent to a curve y2 = ax3 + b at (2, 3), then (a, b) is equal to
A (2, 7)
B (2, –7)
C (–2, 7)
D (–2, –7)
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Correct answer: (2, –7)
Q30. Sum of maximum and minimum values of 4(sin2 θ + cos4 θ) is
A 3
B 4
C 5
D 7
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Correct answer: 7
English UP PGT 2009 UPPSC GIC 2021
Q31. The function sinp θ cosq θ attains its maximum value, when-
A 1 tan p / q − θ =
B 1 tan q / p − θ =
C () 1 tan p / q − θ =
D () 1 tan q / p − θ =
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Correct answer: 1 tan p / q − θ =
English UPPSC GIC 2021 UPPSC Ashram Paddhati 2021
Q32. When we expand sin 4 π θ + in powers of θ, the coefficient of 3 3! θ is-
A −1/2
B 1/2
C −1/2
D 1/2
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Correct answer: −1/2
Q33. If x is a real number, then the function f(x) = x3 + x2 + x + 1 has
A maximum value at x = 0
B minimum value at x = 1
C maximum value at x = –1
D neither maximum nor minimum value
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Correct answer: neither maximum nor minimum value
Q34. The tangent to the curve 2 3 2 2 2at 2at x =,y = 1+ t 1+ t at the point for which 1 t = 2, is
A 13x – 16y = 2a
B 13x + 16y = 2a
C 13x – 8y = 4a
D 13x + 8y = 4a
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Correct answer: 13x – 16y = 2a
Q35. For all real x, the minimum value of 2 1 – x + x 1+ x + x is
A 0
B 1/3
C 1
D 3
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Correct answer: 1/3
Q36. The point on the curve y2 = x, the tangent at which makes an angle π 4 with x- axis, is
A 1 1 –, 4 2
B 1 1, 4 2
C 1 1 –,– 4 2
D 1 1,– 4 2
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Correct answer: 1 1, 4 2
English UP PGT 2011 UPPSC Ashram Paddhati 2021
Q37. If the function f(x) = a sinx + 1 3 sin3x has maximum value at x = π 3, the value of a is
A 3
B 1/3
C 2
D 1/2
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Correct answer: 2
English UPPSC Ashram Paddhati 2021 LT 2018
Q38. The equation of the tangent to the curve x = a(θ + sinθ), y = a(1 + cosθ) at the point θ = π 2, is
A 2(x + y) = a(π + 4)
B 2(x – y) = a(π + 4)
C x + y = 0
D x + y = aπ
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Correct answer: 2(x + y) = a(π + 4)
Q39. A normal to y = (x–1)2 at x = 2 also passes through the point:
A (0, 4)
B (0, 0)
C (4, 0)
D (1, 2)
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Correct answer: (4, 0)
English UKPSC Lecturer (Mains) 2020
Q40. The angle between the curves 6y = –x2 + 7 and y = x3 is:
A π / 4
B π /3
C π / 2
D π
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Correct answer: π / 2