$$ -0.4 \cdot \log(0.4) - 0.3 \cdot \log(0.3) - 0.3 \cdot \log(0.3) = 1.571 $$
The answer is given. How can I calculate the equation for obtaining $1.571$? Please help me understand.
$$ -0.4 \cdot \log(0.4) - 0.3 \cdot \log(0.3) - 0.3 \cdot \log(0.3) = 1.571 $$
The answer is given. How can I calculate the equation for obtaining $1.571$? Please help me understand.