Discussion
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- Question
For x > 0, what is the minimum value of x + x+22x ?
Options- A. 1
- B. 2
- C. 2.5
- D. 1.5
- Correct Answer
- 2.5
- 1. If a : b = c : d = 1 : 6, then what is the value of a2+c2b2+d2 ?
Options- A. 1/600
- B. 1/60
- C. 1/36
- D. 1/360 Discuss
- 2. For x = 462+3, what is the value of x+22x-22+x+23x-23
Options- A. 1
- B. ?2
- C. ?3
- D. 2 Discuss
- 3. Consider the following for real numbers ?, ?, ? and ? ? 1) sec ? = 1/4 2) tan ? = 20 3) cosec ? = 1/2 4) cos ? = 2 How many of the above statements are not possible?
Options- A. one
- B. two
- C. three
- D. four Discuss
- 4. What is the value of sin6? + cos6? + 3 sin2? cos2? ?1 ?
Options- A. 0
- B. 1
- C. 2
- D. 4 Discuss
- 5. What is the value of sin225°+ sin265° ?
Options- A. 0
- B. 1
- C. 2
- D. 4 Discuss
- 6. If 1/3(12x/5 - 1/2) + 6/5 = 7/6, then what is the value of x?
Options- A. 1/6
- B. -1/6
- C. 1/5
- D. -1/5 Discuss
- 7. If a - b = 10 and ab =-21, then what is the value of a3-b3 ?
Options- A. 316
- B. 370
- C. 185
- D. 158 Discuss
- 8. What is the reflection of the point (5, -2) in the line y = -1?
Options- A. (-7 , -2)
- B. (-5 , 0)
- C. (5 , 0)
- D. (-7 , 2) Discuss
- 9. ax + 3y = 6 has slope -2/3. What is the value of a?
Options- A. -2
- B. 2
- C. 3
- D. -3 Discuss
- 10. What is the value of Sin 30° + 2 Cos 30° ?
Options- A. (2?2 + 3)/?6
- B. (9 + 2?3)/9
- C. (1 + 2?3)/2
- D. (2?6 + 1)/?3 Discuss
Simplification problems
Search Results
Correct Answer: 1/36
Correct Answer: 2
Correct Answer: three
Explanation:
Sec of any number can never be less than 1
tan can take any value from -? to + ?
cosec of any number can never be less than 1
cos of any number can never be greater than 1
so option 1,3,4 are not possible
Correct Answer: 0
Correct Answer: 1
Correct Answer: 1/6
Correct Answer: 370
Correct Answer: (5 , 0)
Correct Answer: 2
Correct Answer: (1 + 2?3)/2
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