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To solve equation 50=600e−0.4x 50600=e−0.4x taking ln of both sides we get ln(50/600)=lne−0.4x ln0.08=lne−0.4x since lnex=x x=−(−2.53)0.4 =6.32 Hence x=6.32 Result: x=6.32
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Product of logarithms, prove this identity.
2log(a)log(b)=log(ab)2−log(a)2−log(b)2
for a>1and b>1?
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