Question

Please help Ill give a medal and a fan (: Ill post the question below.

Answer 1

Solve \[\log x ^{2}+ 1=5\] Round to the nearest tenth if necessary.

Answer 2

is that log (x^2 + 1) ?

Answer 3

yes

Answer 4

wait so what is the answer?

Answer 5

log is used in lower maths as a base 10 log; in higher areas, all logs are the natural base e log.

do you know the base of the log in this case?

Answer 6

once you know the base, base both sides to undo the log .. then solve the quadratic

Answer 7

im just checking my answer because im not sure if i did it right

Answer 8

what was your answer?

Answer 9

10

Answer 10

log (101) does not equal 5

log (101), if base 10 .. is about 2

Answer 11

oh ok so the answer would be 2?

Answer 12

no, log(5) does not equal 5

Answer 13

ill assume the this to be a log base 10

log(x^2+1) = 5

x^2+1 = 10^5

x^2 = 10^5 - 1

x = sqrt{10^5 - 1} or -sqrt{10^5 - 1}

Answer 14

the answer is either 100, 10, 2, or 316.266

Answer 15

so its 316.266 right?

Answer 16

i beleive so; as long as ive got the setup correctly interpreted :)

Answer 17

Okay thank you (:

Answer 18

good luck