Log2(7)=a, log2(3)=b вирезати log2(42) через a и b

Question

Log2(7)=a, log2(3)=b вирезати log2(42) через a и b

Answer 1

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Answer 2

log2(7) + log2(3) + log2(3) = log2(7 * 3 * 3) = log2(42) = a + 2b