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JulsSmile [24]
3 years ago
12

Use the equation e^x+e^-x/e^x-e^-x=t tosolve for x

Mathematics
2 answers:
EleoNora [17]3 years ago
7 0

Answer:

Step-by-step explanation:

I assume that the equation is

e^x+\frac{e^{-x}}{e^x} -e^{-x}=t \\

e^x+\frac{1}{e^{2x}}-\frac{1}{e^x} = t

e^{3x}+1-e^x=e^{2x}t

e^{3x}-te^{2x}-e^x=-1

Let u = e^x

u^3-tu^2-u=-1

u(u^2-tu-1) = -1

if u=1, then u^2-tu-1 =-1 \longleftrightarrow u^2-tu=0

then u = 0 (reject) or u = t

So far, we have u = 1 and u = t

if u =1, e^x =1 , then x = 0

if u = t, then e^x = t or x = lnt

lana66690 [7]3 years ago
4 0

Answer:

Solve the rational equation by combining expressions and isolating the variable  

<h2>x = ln ( t − √ t ^2 + 4  )/2</h2><h2>x = ln ( t +√ t ^2 + 4  )/2</h2>

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