log497 + log√77 এর মান কত?
সমাধান
সঠিক উত্তর: Option D
log497 + log√77
= log49√49 + log√7(√7)2
= log49(49)1/2 + log√7(√7)2
= (1/2)log49(49) + 2log√7(√7)
= (1/2) × 1 + 2 × 1
= (1/2) + 2
= (1 + 4)/2
= 5/2
= log49√49 + log√7(√7)2
= log49(49)1/2 + log√7(√7)2
= (1/2)log49(49) + 2log√7(√7)
= (1/2) × 1 + 2 × 1
= (1/2) + 2
= (1 + 4)/2
= 5/2
