помогите:) { } ОСНОВА ЛОГАРИТМА log{2}7 * log{7}0.25
log{2}7 * log{7}0.25= log{2}7 * log{7}1/4= log{2}7 * log{7}2^-2=1/log{7}2*(-2)log{7}2=-2
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log{2}7 * log{7}0.25= log{2}7 * log{7}1/4= log{2}7 * log{7}2^-2=1/log{7}2*(-2)log{7}2=-2