Bab 5 Indeks & logaritma



INDICES AND LOGARITHMS

PAPER 1

1. Solve the equation 8x+1 = 15. [3 marks]

Answer : x = ……………………………

2. Solve the equation 4x = 32. [3 marks]

Answer : x = …………………………

3. Solve the equation [pic]. [3 marks]

Answer : x = …………………………

4. Solve the equation [pic]. [4 marks]

Answer : x = …………………………

5. Given that [pic], express y in terms of x. [3 marks]

Answer : y = …………………………

6. Solve the equation (5x+1)2 = [pic]. [3 marks]

Answer : x = …………………………

7. Solve the equation [pic]. [3 marks]

Answer : x = …………………………

8. Simplify log6 3 + log6 3 + log6 24. [3 marks]

Answer : ………………………………

9. Solve the equation [pic]. [3 marks]

Answer : x = …………………………

10. Given the equation log10 (2x +y) = 1 + log10(y – 5), express y in term of x.

[4 marks]

Answer : y = …………………………

11. Given that log4 T + log2 V = [pic], express T in terms of V. [4 marks]

Answer : T = ……………………

12. Solve the equation log y 34 = 6. [3 marks]

Answer : y = …………………………

13. Simplify 1 – 2 log5 25 + 3 log5 125. [3 marks]

Answer : ………………………………

14. Solve the equation log10( 2x + 6 ) = 1 + log10 ( x – 5). [3 marks]

Answer : x = …………………………

15. Solve the equation 4 log x 5 + 2 log x 3 – log x 375 = 4 and give your answer correct to the four significant figures. [3 marks]

Answer : x = …………………………

Answer

1. x = 0.302

2. x = [pic]

3. x = [pic]

4. x = 2, [pic]

5. x = –6, 3

6. x = [pic]

7. x = –0.5352

8. 3

9. x = [pic], –1

10 y = [pic]( x + 25)

11. T =[pic]

12. y = 1.8

13. 6

14. x = 7

15. x = 1.968

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