logx(1/32) = - 5 হলে x এর মান কত?
A
2
B
3
C
5
D
- 5
উত্তরের বিবরণ
প্রশ্ন: logx(1/32) = - 5 হলে x এর মান কত?
সমাধান:
logx(1/32) = - 5
⇒ x- 5 = 1/32
⇒ x- 5 = 1/25
⇒ x- 5 = 2- 5
⇒ x = 2
0
Updated: 8 hours ago
log3√54 + log3√(3/2) = ?
Created: 4 weeks ago
A
2
B
3
C
5/3
D
3/2
প্রশ্ন: log3√54 + log3√(3/2) = ?
সমাধান:
log3√54 + log3√(3/2)
= log3√(54) × √(3/2) [loga(m) + loga(n) = loga(mn)]
= log3√(54 × 3/2)
= log3√(162/2)
= log3(√81)
= log3(9)
= log3(32)
= 2 log33
= 2 × 1
= 2
0
Updated: 4 weeks ago
256 এর
2 ভিত্তিক লগারিদম কত?
Created: 1 month ago
A
7
B
- 6
C
8
D
9
সমাধান:
log2256
= log228
= 8log22
= 8 × 1 [logaa = 1]
= 8
0
Updated: 1 month ago
log10 0.01 = ?
Created: 1 month ago
A
2
B
- 2
C
- 1/2
D
0.02
প্রশ্ন: log10 0.01 = ?
সমাধান:
log10 0.01
= log10(1/100)
= log10(1/102)
= log10(10- 2)
= - 2 log1010
= (- 2) × 1 [ log1010 =1 ]
= - 2
0
Updated: 1 month ago
