Class 9 Math - Exercise 2.6 (Q1 ka asan hal)
Sawal: Logarithm se qeemat nikalo
Yaad rakho formula:
Multiply ho to log me plus hota hai: log (a x b) = log a + log b
(i) 57.86 x 4.385
Mera tareeqa:
Farz karo x = 57.86 x 4.385
Dono taraf log lagao:
, log x = log 57.86 + log 4.385
Log table se dekho:
log 57.86 = 1.7624
log 4.385 = 0.6410
Dono ko jama karo:
log x = 2.4034
Ab antilog lo:
x = 253.1
Final jawab: 253.1
(ii) 25.753 x 0.5341 x 490.8
Mera tareeqa:
Farz karo x = 25.753 x 0.5341 x 490.8
Teenon ka log alag alag jama hoga:
log x = log 25.753 + log 0.5341 + log 490.8
Table se:
log x = 1.4108 + (-1 + 0.7276) + 2.6909
log x = 3.8293
Sawal: Logarithm se qeemat nikalo
Yaad rakho formula:
Multiply ho to log me plus hota hai: log (a x b) = log a + log b
(i) 57.86 x 4.385
Mera tareeqa:
Farz karo x = 57.86 x 4.385
Dono taraf log lagao:
, log x = log 57.86 + log 4.385
Log table se dekho:
log 57.86 = 1.7624
log 4.385 = 0.6410
Dono ko jama karo:
log x = 2.4034
Ab antilog lo:
x = 253.1
Final jawab: 253.1
(ii) 25.753 x 0.5341 x 490.8
Mera tareeqa:
Farz karo x = 25.753 x 0.5341 x 490.8
Teenon ka log alag alag jama hoga:
log x = log 25.753 + log 0.5341 + log 490.8
Table se:
log x = 1.4108 + (-1 + 0.7276) + 2.6909
log x = 3.8293
