# ILikeMath

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# 50 Answers

 4 Why $\lim_{t\to 0} \frac{t^2\sin ^2}{(t+\text{sint})(t-\text{sint})}=\lim_{t\to 0} \frac{ \sin ^2t}{2\left(1-\frac{\text{sint}}{t}\right)}$ 4 Find the inverse using fast exponential algorithm? 4 Exhibiting A Basis 3 How to find Basis of vector space of real $n \times n$ matrices 3 Reduced row-echelon form of a matrix with variables

# 990 Reputation

 +5 How to prove this property of floor function? +10 Reduced row-echelon form of a matrix with variables +10 Could a set of $3$ vectors in $\mathbb{R}^4$ span all of $\mathbb{R}^4$? +10 Finding a minimal number of charging stops along the route

# 13 Questions

 6 Is my proof correct about limit of $\sin\left(\frac{1}{x}\right)$? 6 Why if $n \mid m$, then $(a^n-1) \mid (a^m-1)$? 4 What this sine function equation means? 3 Hint to prove that $\phi^n + \phi'^n$ is an integer. 2 Am I right about this exercise of Matrices?

# 49 Tags

 19 linear-algebra × 16 3 calculus × 8 6 limits × 4 3 matrices × 6 4 discrete-mathematics × 3 3 probability × 6 4 divisibility × 2 3 elementary-set-theory × 4 4 vector-spaces 3 elementary-number-theory × 3

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