Maths & Physics Help

[nox_fjmoony]

hey thanks Astar.
But you see its where the e part that I don't understand. I'm just starting add maths for the october november session and well I really don't understand how to get the e thingy.
And thanks a lot again.
^_^

[astarmathsandphysics]

I edited my post to make it clearer.

To solve the equation y=log_nx raise the base to the power of both side so n^y=x

[astarmathsandphysics]

ln x is special notation for log_nx=lnx

[nox_fjmoony]

thanks
but
I have a problem in another part
The part where it becomes x=e^1/2 all of a sudden. I'm quite outta practice and so don't quite understand it. Didn't understand that part in the mark scheme either.

Also whats the relationship between ln and e please?
Thankyou very very much Astar. ^_^

Really grateful.

[astarmathsandphysics]

so lnx=1/2 so so

[nox_fjmoony]

Ok
Another question
I guess by this time you might've guessed I"m absolutely stupid and a dunce. But I have to know this.
ok so how does lnx=1/2 becomes e^lnx=e^1/2 ?
I don't know this.
what do you do to make it like this?
 
I'm sorry but as you see I don't know much about ln and log and e and stuff.
Ok thanks again.

[astarmathsandphysics]

To eliminate a log you raise the base to the power of both sides. Here the base is e=2.718.........

[nox_fjmoony]

Ah
Finally
I get it. Thanks so much, wouldn't have known this without you tellin me.
Thanks again.
 

[nox_fjmoony]

hey astar
Another question. Um how does e^lnx=e^1/2 become x=e^1/2 later on?
ok
thanks

[astarmathsandphysics]

hey astar
Another question. Um how does e^lnx=e^1/2 become x=e^1/2 later on?
ok
thanks

e^ cancels log_e=ln

ln is special notation for log_e

[nid404]

Sir, do you notes on your site for complex numbers??

[holtadit]

https://studentforums.biz/index.php/topic,4384.0.html

Please look at my post which the link leads to..

[toobeerajpanchoo]

hi help in maths of cie
could u please provide me formula of how to calculate interior or exterior angle of a regular polygon and also how to calculate on kinematics PLEASE SOME OTHER ALSO FORMULAS USED IN MATHEMATICS THANKS

[Ghost Of Highbury]

hi help in maths of cie
could u please provide me formula of how to calculate interior or exterior angle of a regular polygon and also how to calculate on kinematics PLEASE SOME OTHER ALSO FORMULAS USED IN MATHEMATICS THANKS

if n=number of sides

interior angle = ((n-2)*180)/n


which kinematics formula u want exactly?

v=u + at
s = ut + 0.5at²

v² = u² + 2as

s = (u+v)t/2

[wassup]

hi help in maths of cie
could u please provide me formula of how to calculate interior or exterior angle of a regular polygon and also how to calculate on kinematics PLEASE SOME OTHER ALSO FORMULAS USED IN MATHEMATICS THANKS

n=No. of sides

Sum of interior angles=180(n-2)

One interior angle=Sum of interior angles/n

One exterior angle=180^o-One interior angle