## make n2 the subject???

Quadratic equations and inequalities, variation equations, function notation, systems of equations, etc.
mat002
Posts: 1
Joined: Mon Jun 03, 2013 11:37 pm
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### make n2 the subject???

n1 sinØ1 = n2 sinØ2

any help would be great thanks

make T the subject

A = p(1+r)to the power of nT/n

jg.allinsymbols
Posts: 72
Joined: Sat Dec 29, 2012 2:42 am
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### Re: make n2 the subject???

What you want with the first equation is not clear. Your second equation can be helped------maybe..
Your mixing of wording with symbols is poorly formed for the meaning you want.

A = p(1+r)to the power of nT/n

The "power", an exponent is just T, because the n/n is equal to 1. If you mean something else, please show it at least using proper text expression.
$A=p(1+r)^T$
$log(A)=\log(p(1+r)^T)$
$log(A)=\log(p)+\log((1+r)^T)$
$log(A)=\log(p)+T*\log(1+r)$
$T*\log(1+r)=\log(A)-\log(p)$
$T=\frac{\log(A)-\log(p)}{\log(1+r)}$

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