# vincentbelkin

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# 25 Questions

 4 Why is $y = \sqrt{x-4}$ a function? and $y = \sqrt{4 - x^2}$ should be a circle 3 How do I cube/square a logarithm? 2 Prove that $n! < n^n$ where n >1 and is an integer , why do some people say my solution is wrong? 2 For $a, b \in \mathbb Z,\;$ if $\;a^2(b^2-2b)$ is odd, then a and b are odd. Proof check. 2 Proving if $x$ is an even integer then $x^2 -6x +5$ is odd

# 270 Reputation

 +5 $3^{3n+1} < 2^{5n+6}$ for all non-negative integers $n$. Is my induction solution correct? +5 What do you use for your basis step when its domain is all integers? +10 Prove that $n! < n^n$ where n >1 and is an integer , why do some people say my solution is wrong? +5 For $a, b \in \mathbb Z,\;$ if $\;a^2(b^2-2b)$ is odd, then a and b are odd. Proof check.

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# 32 Tags

 0 discrete-mathematics × 15 0 induction × 4 0 algebra-precalculus × 7 0 algorithms × 4 0 calculus × 6 0 relations × 4 0 summation × 6 0 proof-writing × 3 0 proof-strategy × 5 0 functions × 3

# 5 Accounts

 Stack Overflow 512 rep 212 Mathematics 270 rep 19 Computer Science 108 rep 2 IT Security 101 rep Code Review 101 rep