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12th Standard Business Maths Integral Calculus – I English Medium Free Online Test 1 Mark Questions with Answer Key 2020 - 2021

12th Standard

    Reg.No. :
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Business Maths

Time : 00:10:00 Hrs
Total Marks : 10

    Answer all the questions

    10 x 1 = 10
  1. ഽ2xdx is _______.

    (a)

    2x log 2 + c

    (b)

    2x + c

    (c)

    \(\frac { 2^{ x } }{ log2 } +c\)

    (d)

    \(\frac { log2 }{ { 2 }^{ x } } +c\)

  2. \(\int \frac{\sin 5 x-\sin x}{\cos 3 x} d x\) is _______.

    (a)

    −cos 2x + c

    (b)

    −cos 2x + c

    (c)

    \(-\frac14\)cos2x + c

    (d)

    −4cos2x + c

  3. \(\frac { { e }^{ x } }{ \sqrt { { 1+e }^{ x } } } \) dx is _______.

    (a)

    \(\frac { { e }^{ x } }{ \sqrt { { 1+e }^{ x } } } +c\)

    (b)

    \(2\sqrt { 1+{ e }^{ x } } +c\)

    (c)

    \(\sqrt { 1+{ e }^{ x } } +c\)

    (d)

    \({ e }^{ x }\sqrt { 1+{ e }^{ x } } +c\)

  4. ഽe2x[2x2 + 2x]dx _______.

    (a)

    e2xx2 + c

    (b)

    xe2x + c

    (c)

    2x2e2 + c

    (d)

    \(\frac { { x }^{ 2 }{ e }^{ x } }{ 2 } +c\)

  5. \(\frac { dx }{ \sqrt { { x }^{ 2 }-{ 36 } } } \) is _______.

    (a)

    \(\sqrt { { x }^{ 2 }-{ 36 } } +c\)

    (b)

    log\(\left| x+\sqrt { { x }^{ 2 }-36 } \right| +c\)

    (c)

    log\(\left| x-\sqrt { { x }^{ 2 }-36 } \right| +c\)

    (d)

    \(log\left| { x }^{ 2 }+\sqrt { { x }^{ 2 }-36 } \right| +c\)

  6. \(\int _{ 0 }^{ 1 }{ (2x+1) } dx\) is _______.

    (a)

    1

    (b)

    2

    (c)

    3

    (d)

    4

  7. \(\int _{ 0 }^{ \infty }{ { e }^{ -2x } } \) dx is _______.

    (a)

    0

    (b)

    1

    (c)

    2

    (d)

    \(\frac12\)

  8. The value of \(\int _{ 2 }^{ 3 }{ f(5-x) } dx-\int _{ 2 }^{ 3 }{ f(x) } dx\) is _______.

    (a)

    1

    (b)

    0

    (c)

    -1

    (d)

    5

  9. If \(\int { \frac { { 2 }^{ \frac { 1 }{ x } } }{ { x }^{ 2 } } } dx=k{ 2 }^{ \frac { 1 }{ x } }\) +c, then k is ___________

    (a)

    \(-\frac { 1 }{ { log }_{ e }2 } \)

    (b)

    - loge2

    (c)

    -1

    (d)

    \(\frac { 1 }{ 2 } \)

  10. \(\int { \frac { 2 }{ { \left( { e }^{ x }+{ e }^{ -x } \right) }^{ 2 } } } \) dx = ____________ +c 

    (a)

    \(\frac { { -e }^{ -x } }{ { e }^{ x }+{ e }^{ -x } } \)

    (b)

    \(-\frac { { -e }^{ -x } }{ { e }^{ x }+{ e }^{ -x } } \)

    (c)

    \(\frac { 1 }{ { \left( { e }^{ x }+1 \right) }^{ 2 } } \)

    (d)

    \(\frac { 1 }{ { e }^{ x }-{ e }^{ -x } } \)

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