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age 19
visits member for 3 years, 3 months
seen 4 hours ago

Apr
2
asked Using Gauss-Jordan for an infinite-solutions system
Apr
2
asked Are there no solutions for $\begin {cases} 2x+4y = 6\\ 3x+6y = 5\end {cases}$?
Apr
2
asked Can all equation systems be reduced to the identity matrix?
Apr
1
asked Recurrence relation to calculate the number of strings of $n$ characters that don't have consecutive vowels.
Mar
27
asked How to get the characteristic equation from a recurrence relation of this form?
Dec
5
asked Advice for proving with induction scenarios with multiple chances for using the hypothesis.
Dec
5
asked Finding the explicit formula for the succession $x_0=2, x_{n+1} = 5x_n$ and proving it with induction
Dec
5
asked Proving $\frac{(n+1)^4}{4}+(n+1)^3\le\frac{(n+2)^4}{4}$ for all $n \ge 1$.
Dec
3
asked Proving by induction that $n(n+1)(n+2)$ is divisible by $6$ for all $n \ge 1$
Dec
3
asked Proving by induction inequalities that lack the variable on the right side.
Dec
3
asked Proving by induction that $1+\frac{1}{2}+\frac{1}{3}+…+\frac{1}{n}\le\frac{n}{2}+1$ holds for all $n \ge 1$
Dec
2
asked Proving by induction that $\sum_{i=2}^n(i^2-i) = \frac{n(n^2-1)}{3}$ for all $n \ge 2$
Dec
1
asked What is the purpose of the first test in an inductive proof?
Nov
9
asked Proving that $f(n,m) = 3^n5^m$ is injective.
Nov
9
asked Demonstrate that if $f$ is surjective then $X = f(f^{-1}(X))$
Nov
9
asked If $f$ is injective, demonstrate that $f \circ g = f \circ h \implies g = h$
Nov
9
asked Demonstrating that $f(x) = x^2 + 1$ is bijective and calculating $f \circ f^{-1}(x)$
Nov
9
asked How to work with function properties when it is defined by an equation system?
Nov
8
asked Functions exercise for $f(x) = \begin{cases} x \textrm{ if } x \le 3 \\ 11 - 2x \textrm{ if } 3 < x\end{cases}$
Nov
8
asked Proving that the relation $(x,y)S(x',y') \iff x - x' \in \mathbb{Z} \land y = y'$ is of equivalence.