SOLUTION: When rewriting an exponential expression with a negative exponent and positive base to an expression containing only a posiive exponent, does the sign of the base change? I appp

Algebra ->  Exponents -> SOLUTION: When rewriting an exponential expression with a negative exponent and positive base to an expression containing only a posiive exponent, does the sign of the base change? I appp      Log On


   

Question 447445: When rewriting an exponential expression with a negative exponent and positive base to an expression containing only a posiive exponent, does the sign of the base change?
I apppreciate your help
Thank You !
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
When rewriting an exponential expression with a negative exponent and positive base to an expression containing only a positive exponent, does the sign of the base change?
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No; the negative in the exponent means "invert the base";
it does not mean you should change the sign of the base.
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Ex:
y = 10*2^(-t)
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y = 10*(1/2)^t
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Cheers,
Stan H.