also..Find the exact value of. log4 256
2006-12-07 10:05:55 · 3 answers · asked by Eric K 2 in Science & Mathematics ➔ Mathematics
For your first question solve for x by taking the 9th root of both sides. Once you have the answer for x solve x^4 by (answer)^4.
For your second answer start saying Log base 4 =256 which means 4 to the what = 256 4^x =256. I need a TI83 to be sure of the second answer. Hope this helps.
2006-12-07 10:22:22 · answer #1 · answered by anjelfun 4 · 0⤊ 0⤋
the first one is a calculator one.
So basically take the ninth root of both sides
x=127^(1/9)
x=1.71299
raise that to the fourth and get your answer
2) log4 256
this asks 4 to what power is equal to 256? ==> definition of a log
4^x=256
factoring 256 gives 16 * 16
4^x=4*4*4*4=4^4
2006-12-07 18:23:21 · answer #2 · answered by heyhelpme41 3 · 0⤊ 0⤋
x to the 9th is round 1.624 thats abit high, but damned close. so do that to the 4th power and you should be close to your answear. as to log... i can't do that.. got the first part on paper...
2006-12-07 18:25:11 · answer #3 · answered by Tom 3 · 0⤊ 0⤋