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Math Assignment Class XII Ch-8 | Applications of Integrations

 Mathematics Assignment on

applications of integral Class XII

Important and extra questions on Applications of Integral for class XII, This assignment is strictly based on previous years CBSE question papers.

Question : 1  Using integration, find the area bounded by the curve 4x2 + y2 = 36.

Answer: 18Ï€

Question : 2 The area bounded by the curve, y2 = 4x, y-axis, and y = 3 is represented as

Answer: 9/4

Question : 3 
Find Area bounded by the curve y = x3, the x-axis and the ordinates x = –2 and x = 1 

Answer: 15/4 

Solution Hint

Question : 4 Sketch the graph of y = x|x| and hence find the area bounded by this curve, X – axis and the ordinates x = -2 and x = 2, using integration.

Answer: 16/3

Solution Hint: [Hint: y = x2 if x > 0 and y = –x2 if x < 0]


equation 

equation

Question 5: Using integration, find the area of the region enclosed between the circle x2 + y2 = 16 and the lines x = – 2 and x = 2.

Answer: 8√3+16Ï€/3

Question 6: Using integration, find the area bounded by the ellipse 9x2 +25y2 = 225, the line x = -2, x =2, and the x-axis.

Answer: equation

Question 7: Using integration find the area of the ellipse  equation , included between the lines x = -2 and x = 2

Answer: 4√3 + 8Ï€/3

Question 8: Find the area of the region bounded by the curves x2 = y, y = x+2 and x-axis, using integration.

Answer: 5/6

Solution Hint:  equation

Question 9: Using integration, find the area of the region bounded by the line y =√3x ,  the curve y = equation  and y-axis in the first quadrant.

Answer: π/3

Question 10: Using integration, find the area of the region bounded by the parabola y2 = 4ax and its latus rectum.

Answer: 8/3 a2

Question 11: Find the area bounded by the y-axis,  y = cos x and y = sin x when  equation 

Answer: √2 - 1

Solution Hint

equation
Question 12: Find the area bounded by the curve y = sin x between x = 0 and x = 2Ï€

Answer: 4 Square unit

Solution Hint

equation  
                                                Or

equation

Question : 13: Using integration find the area of region bounded by the triangle whose vertices are (1, 0), (2, 2) and (3, 1).

Answer: 3/2 Square Units

Question 14: Using integration find the area of region bounded by the triangle whose vertices

are (– 1, 0), (1, 3) and (3, 2).

Answer: 4 Square Units

Question 15: Using integration find the area of the triangular region whose sides have the equations y = 2x + 1, y = 3x + 1 and x = 4.

Answer: 8 Units

Question 16: If A1 denotes the area of region bounded by y2 = 4x, x = 1 and x-axis in the first quadrant and A2 denotes the area of region bounded by   y2 = 4x, x = 4, find A1 : A2.

Answer: A1  4/3, A2 = 64/3,  A1 : A2 =1:16

Question 17: Find the area of the region bounded by the curves y = x2 + 2, y = x, x = 0 and x = 3

Answer: 21/2

Solution Hint: 

Question : 18:  Sketch the graph of y = |x + 3| and evaluate   equation  

Answer: 9

Question : 19: Find the area enclosed by the parabola 4y = 3x2 and the line 2y = 3x +12

Answer: 27 Square Unit

Solution Hint:

Question : 20 :  Using the method of integration find the area bounded by the curve |x| + |y| = 1

Answer: 2 Square units

Solution Hint

Question : 21 : Find the area of the smaller region bounded by the ellipse equation and the line equation .

Answer:  equation

THANKS FOR YOUR VISIT

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