Workspace

Report

If* x = a*sin*θ* and *y = bcosθ *, then *d*^{2}*y/ d*^{2}*x* is

**A. ** a/ b^{2} sec^{2}*θ*

**B. ** – b/a sec^{2}*θ*

**C. ** –b/a^{2} sec^{3}*θ*

**D. ** −b^{2}/a^{2} sec^{3}*θ*

**Answer : ****Option C**

**Explaination / Solution: **

Workspace

Report

The derivative of *f* (*x*) = *x* | *x*
| at *x* = −3 is

**A. ** 6

**B. ** - 6

**C. ** does not exist

**D. ** 0

**Answer : ****Option A**

**Explaination / Solution: **

Workspace

Report

A man has 3 fifty rupee notes, 4 hundred rupees notes and 6 five hundred rupees notes in his pocket. If 2 notes are taken at random, what are the odds in favour of both notes being of hundred rupee denomination?

**A. ** 1:12

**B. ** 12:1

**C. ** 13:1

**D. ** 1:13

**Answer : ****Option A**

**Explaination / Solution: **

Workspace

Report

If two events *A* and *B* are such that P () = 3/10 and P ( A ∩ ) = 1/2 , then P ( A ∩ B) is

**A. ** 1/2

**B. ** 1/3

**C. ** 1/4

**D. ** 1/5

**Answer : ****Option D**

**Explaination / Solution: **

Workspace

Report

If , then the value of *k* is

**A. ** log 3

**B. ** − log 3

**C. ** – 1 / log 3

**D. ** 1 / log 3

**Answer : ****Option C**

**Explaination / Solution: **

Workspace

Report

is

**A. **

**B. **

**C. **

**D. **

**Answer : ****Option B**

**Explaination / Solution: **

Workspace

Report

is

**A. **

**B. **

**C. **

**D. **

**Answer : ****Option D**

**Explaination / Solution: **

Workspace

Report

No Explaination.

Workspace

Report

No Explaination.

Workspace

Report