Q. Given the substitutions ln2=a,ln3=b, and ln5=c, find the value of ln(1635) in terms of a,b, and c.Answer:
Break down logarithm: We need to express ln(1635) using the given substitutions ln2=a, ln3=b, and ln5=c. We start by breaking down the logarithm using logarithmic properties.ln(1635)=ln(35)−ln(16)
Express in prime factors: Next, we express the cube root and the number 16 in terms of their prime factors to simplify the logarithms.ln(35) can be written as (31)ln(5) because the cube root is the same as raising to the power of 31.ln(16) can be written as ln(24) because 16 is 2 raised to the power of 4.
Apply power rule: Now we apply the power rule of logarithms, which states that ln(xy)=y⋅ln(x), to both terms.(1/3)ln(5) becomes (1/3)c because ln5=c.ln(24) becomes 4⋅ln(2) because ln(2)=a.
Substitute values: Substitute the values of a, b, and c into the expression.ln(1635)=31c−4a
Final expression: We have now expressed ln(1635) in terms of a, b, and c. There are no further simplifications needed, and we have not made any mathematical errors.