A
7
B
- 6
C
8
D
9
উত্তরের বিবরণ
সমাধান:
log2256
= log228
= 8log22
= 8 × 1 [logaa = 1]
= 8
0
Updated: 2 weeks ago
loga(b4) = 4c এবং logb(a4)
= 4d হলে, cd = কত?
Created: 2 weeks ago
A
0
B
1
C
3
D
4
সমাধান:
loga(b4) = 4c
⇒ 4 × loga(b) = 4c [logn(mk) = k logn(m)]
⇒ loga(b) = c
আবার,
logb(a4) = 4d
⇒ 4 × logb(a) = 4d
⇒ logb(a) = d
∴ cd = loga(b) × logb(a)
⇒ cd = 1 ;[logn(m) × logm(n) = 1]
0
Updated: 2 weeks ago
log28 = কত?
Created: 2 weeks ago
A
4
B
3
C
2
D
1
প্রশ্ন: log28= কত?
সমাধান:
log28
= log2(2)3
= 3log22
= 3 × 1
= 3
0
Updated: 2 weeks ago
প্রশ্ন:
Created: 3 months ago
A
√7
B
3√7
C
4
D
4√7
প্রশ্ন:
সমাধান:
0
Updated: 3 months ago
