if someone is to solve what seems to a difficult problem, , would know the basics?!?, there is no need to it step by step as if you are showing this to a beginner. thanks anyway.
Stanford University Admission Entrance Interview Tricks: 15ˣ = 45; x =? log15ˣ = log45 = log(15)(3), x = log₁₅15 + log₁₅3 = 1 + 0.406 = 1.406 The calculation was achieved on a smartphone with a standard calculator app Answer check: x = log₁₅45 = 1.406: 15ˣ = 15^(log₁₅45) = 45; Confirmed Final answer: x = log₁₅45 = 1.406
X=1+log3/log15
I would leave it at x = ln45/ln 15
You are right it is the best and useful answer.
It Was helpful
I am surprised. Is it necessary to solve it? it comes out in one step
x=log45/log15≈(0,95+0,7)/(0,7+0,48)≈1,65/1,18≈7/5.
Absolute error less then 0,01.
if someone is to solve what seems to a difficult problem, , would know the basics?!?, there is no need to it step by step as if you are showing this to a beginner.
thanks anyway.
He seems to be a biginner who tries to learn math after his retirement in his 50s. We need to solve it in 30 seconds.
Bro I learned how to solve questions like this and harder in high school. Stop glazing the difficulty of this shit
I’m glad you find it easy, hopefully, someone else will find this helpful!
Stanford University Admission Entrance Interview Tricks: 15ˣ = 45; x =?
log15ˣ = log45 = log(15)(3), x = log₁₅15 + log₁₅3 = 1 + 0.406 = 1.406
The calculation was achieved on a smartphone with a standard calculator app
Answer check:
x = log₁₅45 = 1.406: 15ˣ = 15^(log₁₅45) = 45; Confirmed
Final answer:
x = log₁₅45 = 1.406