Limits And Derivatives CBSE Questions & Answers
Limits And Derivatives
This is Mathematics Class 11 Limits and Derivatives CBSE Questions & Answers. There are 15 questions in this test with each question having around four answer choices.
Questions & Answers
1
\(\mathop {Lt}\limits_{x \to \infty } {{\mathop {\Sigma \;r}\limits_{r = 1}^n } \over {{n^2}}}\) is equal to
- A\({1 \over 3}\)
- B\({1 \over 4}\)
- C\({1 \over 2}\)Correct
- Dnone of these
2
\(\mathop {Lt}\limits_{n \to \infty } {{\mathop \Sigma \limits_{r = 1}^n {r^2}} \over {{n^3}}}\) is equal to
- Anone of these
- B\({1 \over 2}\)
- C\({1 \over 4}\)
- D\({1 \over 3}\)Correct
3
\(\mathop {Lt}\limits_{x \to 0} \;{1 \over x}\)
- Atends to - \(\infty \)
- Btends to \(\infty \)
- Cis equal to 0
- Ddoes not existCorrect
4
\(\mathop {Lt}\limits_{x \to 0} \;\;x\left[ x \right]\) is equal to
- A0 or 1
- B0 or – 1
- Cnone of these
- D0Correct
5
\(\mathop {Lt}\limits_{x \to 0} \;\;{{{{(1 + x)}^n} - 1} \over x}\) is equal to
- An – 1
- B1
- Cnone of these
- DnCorrect
6
\(\mathop {Lt}\limits_{n \to \infty } \;\;\left[ {{1 \over {1 - {n^2}}} + {2 \over {1 - {n^2}}} + {3 \over {1 - {n^2}}} + ...{n \over {1 - {n^2}}}} \right]\) is equal to
- A0
- B\( - {1 \over 2}\)Correct
- Cnone of these
- D\({1 \over 2}\)
7
\(\mathop {Lt}\limits_{h \to 0} \;{{{{\sin }^2}(x + h) - {{\sin }^2}x} \over h}\) is equal to
- Asin x cos x
- Bsin 2 xCorrect
- C\({\cos ^2}x\)
- D2 sin x
8
If a is a real number, then \(\mathop {Lt}\limits_{x \to a} \;\;\;{{\left| {x - a} \right|} \over {x - a}}\)
- Adoes not existCorrect
- Bis equal to 0
- Cis equal to – 1
- Dis equal to 0
9
If k be a integer, then \(\mathop {Lt}\limits_{x \to {k^ + }} \;\;(x - \left[ x \right])\) is equal to
- A1
- B0Correct
- Cnone of these
- D-1
10
\(\mathop {Lt}\limits_{x \to {a^ - }^ - } \;\;{{\left| {x - a} \right|} \over {x - a}}\) is equal to
- A1
- B0
- Cnone of these
- D- 1Correct
11
If k be an integer, then \(\mathop {Lt}\limits_{x \to {k^ - }^{}} \;\;(x - \left[ x \right])\) is equal to
- A1Correct
- B0
- Cnone of these
- D-1
12
\(\mathop {Lt}\limits_{x \to 0} \;\;\left( {{{\tan x - x} \over x}} \right)\sin \left( {{1 \over x}} \right)\) is equal to
- A1
- Bnone of these
- Ca real number other than 0 and 1
- D0Correct
13
\(\mathop {Lt}\limits_{x \to 3} \;\;{{\sqrt {{x^2} + 10} - \sqrt {19} } \over {x - 3}}\) is equal to
- Anone of these
- B\({6 \over {\sqrt {19} }}\)
- C\({3 \over {\sqrt {19} }}\)Correct
- D0
14
Maximum value of \({x^3} - 3x + 2in\left[ {0,2} \right]\) is
- Anone of these
- B4Correct
- C1
- D2
15
\(\mathop {Lt}\limits_{x \to 0 + } {{\sqrt x } \over {\sqrt {16 + \sqrt x } - 4}}\)
- Anone of these
- Bis equal to 0
- Cis equal to 8Correct
- Ddoes not exist