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Dat Do edited beginproblem_a_You_a.tex
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Commit id: 9b52ed8292697ca637d783f86a400b7c3a56e607
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\end{problem}
\textbf{Solution 2: }
\textbf{Proof:}
\\*
Base Case: For $n=3$, \\$2^3+3^3+4^3 \leq 5^3$ \\$99 \leq 125$. \\The inequality holds true for $n=3$
\\*
Assume: $2^k+3^k+4^k\leq5^k$. We Base Case: For $n=3$ $2^3+3^3+4^3\leq5^3$
\\
$99\leq125$, so the inequality is true for $n=3$
\\\\
Assume $2^k+3^k+4^k\leq5^k$, we must show that
$k+1$, $2^{k+1}+3^{k+1}+4^{k+1}\leq5^{k+1}$
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$2^k+3^k+4^k\leq5^k$ First, we multiply both sides by $5$
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$5(2^k+3^k+4^k)\leq5*5^k$
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$5*2^k+5*3^k+5*4^k\leq5*5^k$ We can replace each $5$ with the value of the coefficient for each term. This still keeps the inequality true
\\
$2*2^k+3*3^k+4*4^k\leq5*5^k$
To submit the homework, you need to upload the pdf file into ilearn by 8AM on Tuesday,
January 21, and turn-in a paper copy in class.