#2 08. 06. 2007 21:27
Re: Exponenciální rovnice
Upravy:
(0.5)^(x^2)*2^(2x+2)=64^(-1)
(1/2)^(x^2)*2^(2x+2)=(2^6)^(-1)
(2^(-1))^(x^2)*2^(2x+2)=2^(-6)
2^(-x^2)*2^(2x+2)=2^(-6)
2^(-x^2 + 2x + 2) = 2^(-6)
-x^2 + 2x + 2 = -6
x^2 - 2x - 8 = 0
Kvadraticka rovnice. Vyresim .... a vyjde x = 4, x = -2, tdy moznost a)
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