Discussion
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- Question
If 3x + [1/(5x)] = 7, then what is the value of 5x/(15x2+ 15x + 1) ?
Options- A. 1/5
- B. 1/10
- C. 2/5
- D. 10
- Correct Answer
- 1/10
- 1. If x3+ 2x2? 5x + k is divisible by x + 1, then what is the value of k?
Options- A. -6
- B. -1
- C. 0
- D. 6 Discuss
- 2. If 2 cos ? = 2 ? sin ?, then what is the value of cos ??
Options- A. 1 or 3/5
- B. 1 or ?1/2
- C. ?1 or?1/2
- D. ?1 or 3/5 Discuss
- 3. Smaller diagonal of a rhombus is equal to length of its sides. If length of each side is 4 cm, then what is the area (in cm2) of an equilateral triangle with side equal to the bigger diagonal of the rhombus?
Options- A. 6
- B. 9?3
- C. 12
- D. 12?3 Discuss
- 4. If 3a ? (3/a) ? 3 = 0, then what is the value of a3 ? (1/a3) + 2 ?
Options- A. 0
- B. 2
- C. 4
- D. 6 Discuss
- 5. If (x/y)a-4 = (y/x)2a-5 , then what is the relation between x and y?
Options- A. x > y
- B. Cannot be determined
- C. x < y
- D. x = y Discuss
- 6. If x + [1/(4x)] = 5/2, then what is the value of (64x6+ 1)/8x3 ?
Options- A. 110
- B. 115
- C. 125
- D. 140 Discuss
- 7. If x2+ x = 19 , then what is the value of (x + 5)2+ [1/(x + 5)2] ?
Options- A. 77
- B. 79
- C. 81
- D. 83 Discuss
- 8. What is the simplified value of sec4? ? sec2? tan2? ?
Options- A. cosec2?
- B. Cot2?
- C. sec2 ?
- D. sec? tan ? Discuss
- 9. What is the simplified value of (sin A ? cosec A)(sec A ? cos A) (tan A + cot A)?
Options- A. 1
- B. -1
- C. 0
- D. 2 Discuss
- 10. If (1/cos ?) ? (1/cot ?) = 1/P, then what is the value of cos ??
Options- A. (P + 1)/(P ? 1)
- B. (P2+ 1)/2P
- C. 2(P2+ 1)/P
- D. 2P/(P2+ 1) Discuss
Simplification problems
Search Results
Correct Answer: -6
Correct Answer: 1 or 3/5
Correct Answer: 12?3
Correct Answer: 6
Correct Answer: Cannot be determined
Correct Answer: 110
Correct Answer: 79
Correct Answer: sec2 ?
Correct Answer: -1
Correct Answer: 2P/(P2+ 1)
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