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Xeract
- 5
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Sorry if this is a very simple question, I am trying to rearrange (1+x)e^-x = 0.5 for x, and just can't seem to get my head around it. Any tips would be greatly appreciated.
nicksauce said:It's certainly impossible to solve analytically.
That's wrong, read all the posts before yours.llemes4011 said:I don't know if I'm doing this right, but here are my thoughts. if you factor out the first side you get xe^x+e^x=0.5 Then if you divide both sides by x you get e^x+e^x=0.5/x add your like terms on the left and you get 2e^x=0.5/x (i think that's right)
See if you can get it from there
((i just realized that this was from over a week ago AFTER i finished lol))
It's ok, no worries.llemes4011 said:sorry, i also didn't read the original question right *sigh*
The equation "Rearranging (1+x)e^-x = 0.5" is used for finding the value of x that satisfies the equation, or in other words, the value of x that makes the equation true.
The "e" in the equation represents the mathematical constant approximately equal to 2.718, known as Euler's number. It is commonly used in equations involving growth and decay, such as in this case.
To solve this equation, you can use algebraic manipulation techniques to isolate the variable, in this case x, on one side of the equation. This involves multiplying, dividing, and taking logarithms of both sides until you have x by itself. You can also use numerical methods, such as graphing or using a calculator, to approximate the solution.
The equation is equal to 0.5 because it represents the point at which the function (1+x)e^-x intersects the horizontal line y=0.5. In other words, it is the x-value where the function has a value of 0.5.
This equation can be used in various scenarios involving growth and decay, such as in population dynamics, radioactive decay, and bacterial growth. It can also be used in economics and finance to model exponential growth or decline of investments or loans.