Log a 3.5: Finding the Solution using Logarithmic Rules

  • Thread starter Thread starter JasonX
  • Start date Start date
  • Tags Tags
    Log
JasonX
Messages
10
Reaction score
0
[SOLVED] log a 3.5= ?

given log a 2= 1.8301 and log a 7= 5.0999

what is log a 3.5=?

Thanks!
 
Physics news on Phys.org
Why does the thread name say solved?

Anyway, Please show us some working, we can't help you otherwise. All I'm going to say is to remember some log identities. You must see a relation between 3.5, 7 and 2.
 
This may come in handy..

log(a/b)=log(a)-log(b)
 
benjyk said:
This may come in handy..

log(a/b)=log(a)-log(b)

*sigh* Well stuff the forum regulations hey?
 

Thread 'Prove that the integral is equal to ##\pi^2/8##'

Prove $$\int\limits_0^{\sqrt2/4}\frac{1}{\sqrt{x-x^2}}\arcsin\sqrt{\frac{(x-1)\left(x-1+x\sqrt{9-16x}\right)}{1-2x}} \, \mathrm dx = \frac{\pi^2}{8}.$$ Let $$I = \int\limits_0^{\sqrt 2 / 4}\frac{1}{\sqrt{x-x^2}}\arcsin\sqrt{\frac{(x-1)\left(x-1+x\sqrt{9-16x}\right)}{1-2x}} \, \mathrm dx. \tag{1}$$ The representation integral of ##\arcsin## is $$\arcsin u = \int\limits_{0}^{1} \frac{\mathrm dt}{\sqrt{1-t^2}}, \qquad 0 \leqslant u \leqslant 1.$$ Plugging identity above into ##(1)## with ##u...
View full post »

Similar threads

Solving for z in the Equation tan z = 1 + 2i
Replies
3
Views
2K
Finding Values of Complex Equation
Replies
1
Views
1K
When to Use Ln vs Log in Calculating Derivatives?
Replies
7
Views
4K
Definite integral using only properties
Replies
7
Views
1K
Finding domain for when composite function is continuous
Replies
3
Views
1K
Why is this not a general solution to this nonlinear DE?
Replies
5
Views
1K
What is the radius of convergence for a series with logarithmic terms?
Replies
3
Views
2K
Evaluate the following integral from a physics textbook
Replies
8
Views
1K
Power series: Why is this power series equal to log(2)?
Replies
2
Views
1K
Differentiation / Chain rule - Splitting Logarithms
Replies
1
Views
1K

Hot Threads

Recent Insights

Back
Top