x=20²÷(18×9.8) -find the value using log tables
Answers
Answered by
0
Take logarithms to base 10 on both sides,
log X = log 20² - log 18 - log 9.8 = 2 log 20 - log 18 - log 9.8
= 2 (log 2 + log 10) - (log 2 + 2 log 3 ) - ( 2 log 7 - log 10 + log 2)
= 2 log 2 + 2 * 1 - log 2 - 2 log 3 - 2 log 7 + 2 * 1 - 2 * log 2
simplify by substituting log 2 , log 3 , log 7 from log book.
find inverse log after .
log X = log 20² - log 18 - log 9.8 = 2 log 20 - log 18 - log 9.8
= 2 (log 2 + log 10) - (log 2 + 2 log 3 ) - ( 2 log 7 - log 10 + log 2)
= 2 log 2 + 2 * 1 - log 2 - 2 log 3 - 2 log 7 + 2 * 1 - 2 * log 2
simplify by substituting log 2 , log 3 , log 7 from log book.
find inverse log after .
Similar questions