The area enclosed by y = 5 - x2 and y = x&nbs

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 Multiple Choice QuestionsMultiple Choice Questions

121. integral fraction numerator dx over denominator cos space straight x space plus space square root of 3 space sin space straight x end fraction equals
  • 1 half space log space tan space open parentheses straight x over 2 plus straight pi over 12 close parentheses space plus straight C
  • 1 half space log space tan space open parentheses straight x over 2 minus straight pi over 12 close parentheses plus straight c
  • log space tan space open parentheses straight x over 2 minus straight pi over 12 close parentheses plus straight c
  • log space tan space open parentheses straight x over 2 minus straight pi over 12 close parentheses plus straight c
137 Views

122.

The area enclosed between the curves y2 = x and y = |x| is

  • 2/3

  • 1/3

  • 1/6

  • 1/6

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123.

The area enclosed between the curve y = loge (x + e) and the coordinate axes is

  • 1

  • 2

  • 3

  • 3

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124.

The parabolas y2 = 4x and x2 = 4y divide the square region bounded by the lines x = 4, y = 4 and the coordinate axes. If S1, S2, S3 are respectively the areas of these parts numbered from top to bottom; then S1 : S2: S3 is

  • 1 : 2 : 1

  • 1 : 2 : 3

  • 2 : 1 : 2

  • 2 : 1 : 2

243 Views

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125. limit as straight n rightwards arrow infinity of space sum from straight r equals 1 to straight n of space 1 over straight n straight e to the power of straight r over straight n end exponent space is space
  • e

  • e+1

  • e-1
  • e-1
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126.

The area of the region bounded by the curves y = |x – 2|, x = 1, x = 3 and the x-axis is

  • 1

  • 2

  • 3

  • 3

124 Views

127.

Let g(x) = cos x2, f(x) = x and α, β (α <β) be the roots of the quadrtic equation 18x2 - 9πx + π2 = 0. Then the area (in sq. units) bounded by the curve y = (gof)(x) and the lines x = α, x = β and y = 0 is

  • 12(2-1)

  • 12(3-1)

  • 12(3+1)

  • 12(3-2)


128.

If sum of all the solutions of the equation 8 cos x. cos π6+x.cosπ6-x-12 = 1 in [0,π] is kπ, then k is equal to:

  • 20/9

  • 2/3

  • 13/9

  • 8/9


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129.

The area enclosed by y = 5 - x2 and y = x - 1 is

  • 5π4 - 2 sq. units

  • 5π - 22 sq. units

  • 5π4 - 12 sq. units

  • π2 - 5 sq. units


C.

5π4 - 12 sq. units

The graphs of y = x - 1 and y = 5 - x2 are shown in the figure and the shaded region is the required region bounded by the two curves.

Let A be the area bounded by the given curves. Then,

A = - 115 - x2 + x - 1dx + 125 - x2 - x + 1dx

   = - 125 - x2dx + x22 - x- 11 + - x22 + x12

   = 12 × 5 - x2 + 52sin-1x5- 1 2- 52

   = - 12 + 52sin-125 × 1 - 15 + 151 - 45

   = -  12 + 52sin-11

   = 5π4 - 12 sq. units


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130.

The area of the region bounded by the curve y = x3, its tangent at (1, 1) and X-axis, is

  • 112 sq units

  • 16 sq units

  • 217 sq units

  • 215 sq units


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