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What is the formula for finding the volume of a cylindrical shell? where R is the radius of the outer cylinder, r is the radius of the inner cylinder and h is the length of the cylindrical shell.
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We can approximate integrals by Riemann sums.
- A) True
- B) False
- C)
- D)
If the definite integral of f(x)=Sin x over the interval [-a,0] is equal to ‘- 2’ then what will be the value of the definite integral of f(x)= (Sin x) +1 over the same interval?
- A) -1
- B) -2+a
- C) 2-a
- D) -2-a
The integral of f(x) =sin(x) from x=0 to x=pi is ...............
- A) 0
- B) None of these
- C) 2
- D) 1
The value of $\int\limits_1^2 {\ln x\,dx} \,\_\_\_\_.$
- A) 2ln2-1
- B) 2ln2+2
- C) 2ln2+1
- D) ln2-1
If the definite integral of f(x)=cos x over the interval [0, a] is equal to ‘1’ then what will be the value of a?
- A) 2π
- B) π
- C) π/2
- D) π/4
If the function f(x) is negative for some values in the interval [a, b], what alteration should be made to the volume formula?
- A) Take the absolute value of f(x).
- B) Exclude those values from the interval
- C) Multiply by -1
- D) No modification needed.
$\int\limits_a^b {f(x)dx = \_\_\_\_\_\_.}$
- A) $- \int\limits_b^a {f(x)dx}$
- B) $\int\limits_b^a {f(x)dx}$
- C)
- D)
The ........ states that if f(x)is continous on the closed interval [a,b]and differentiable on the open interval (a,b)then there exists a point c such that
[f(b)-f(a)]/(b-a)=f'(c)
- A) Mean value theorem.
- B) None of these.
- C) Intermediate value theorem .
- D) Extreme value theorem.
The volume by the Washers generated by revolving the region around y-axis is given by the formula ----------
- A) $$\int\limits_a^b {\pi \,([u(y)} ]^2 \, * \,[v(y)]^2 )dy$$
- B) $$\int\limits_a^b {\pi \,([u(y)} ]^2 \, - \,[v(y)]^2 )dy$$
- C) $$\int\limits_a^b {\pi \,[\frac{{u(y)}} {{v(y)}}} ]^2 \,dy$$
- D) $$\int\limits_a^b {\pi \,([u(y)} ]^2 \, + \,[v(y)]^2 )dy$$
The volume of solid obtained when the region under the curve y=x over the interval [0,2] is revolved about the x-axis is
- A) $V = \int\limits_0^2 {{x^2}dx}$
- B) $V = \int\limits_0^2 {\pi {y^2}dy}$
- C) $V = \int\limits_0^2 {\pi {x^2}dx}$
- D) $V = \int\limits_0^2 {\pi xdx}$
If the average value of y = sin3x with respect to x over [0, 2] is 0.525, then what will be the value of $\int\limits_0^2 {{{\sin }^3}xdx}$?
- A) 0.5
- B) 2.5
- C) 1.5
- D) 1.05
If the definite integral of f(x)=cos x over the interval [-a,0] is equal to ‘-1’ then what will be the value of the definite integral of f(x)= (cos x)+1 over the same interval?
- A) 0
- B) 1+a
- C) -1+a
- D) -1-a
The volume of the solid generated by the region enclosed between $y = \sqrt x$ x=0 , x=1 and x-axis is revolved about y-axis.Which of the following equation gives the volume of solid by cylindrical shell ____.
- A) $\frac{{4\pi }}{5}$
- B) $\frac{{124\pi }}{5}$
- C) None of the above
- D) $\frac{{12\pi }}{5}$
We cannot evaluate definite integrals by substitution method.
- A) True
- B) False
- C)
- D)
$$Area\,\,between\,\,the\,\,curves\,\,y = 4 + 3x - x^2 \,\,and\,\,x - axis\,\,in\,\,sq.\,\,unit\,\,is\,\,$$
- A) $$\frac{{125}} {6}$$
- B) $$\frac{{125}} {4}$$
- C) $$None\,\,of\,\,these$$
- D) $$\frac{{125}} {3}$$
If the radius of a sphere is doubled, how does the volume change?
- A) It becomes half of the original volume.
- B) It remains the same of the original volume.
- C) It becomes eight times of the original volume.
- D) It becomes four times of the original volume.
$$The\,\,area\,\,bounded\,\,by\,\,the\,\,curve\,\,y = \,4x - x^2 \,\,and\,\,x - axis\,\,is\,\,$$
- A) $$\frac{{30}} {7}\,\,$$
- B) $$None\,\,of\,\,these$$
- C) $$\frac{{31}} {7}\,\,$$
- D) $$\frac{{32}} {3}$$
What is the geometric shape used in the method of cylindrical shells for finding volumes?
- A) Sphere.
- B) Cylinder.
- C) Pyramid.
- D) Cone.
If $$\int_0^2 {(x^2 + 1)} dx = \frac{{14}} {3}$$ Then the solution of $$\int_2^0 {(x^2 + 1)} dx =$$ will be....
- A) 14/3
- B) none of these
- C) -14/3
- D) -3/14