Question 794350: domain of e^-x +In(2x^2+x-1)
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! domain of e^-x +In(2x^2+x-1)
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Solve 2x^2 + x -1 >= 0
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Solve the equality::
2x^2 + x - 1 = 0
(2x-1)(x+1) = 0
x = 1/2 ; x = 1
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Solve the inequality::
x < 1/2 ; x > 1
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Domain:: (-oo,1/2]U[1,+oo)
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Cheers,
Stan H.
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