>>245
(与式)= -[2x * ln(x^2 - 0.09)]
= -[2x * ( ln(x + 0.03) + ln(x - 0.03) )]
= -( ∞ - 0.8 * ( ln0.07 - ln0.01 ) )
= -∞

どこが間違ってるんでしょうか・・・?