sammiegal SG indices, surds & logarithms test tmr and I don’t have a clue how to change the bases of logarithms.. help? i don’t understand the textbook meaning- it doesnt make sense.
CoolMyth SG And the proof: Let log(a) x = y --> a^y = x Take base b on both sides: --> y log(b) a = log(b) x --> y = [log(b) x]/[log(b) a]
CoolMyth SG You can practice using values on your calculator, with any number you chose and then using the common bases e and 10. You'll see the answer on both sides match up.
