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Aug
16
comment the geometry of level set of solution of elliptic PDE
If $\delta u = u^2$ and $u=0$ on the boundary, then isnt $u=0$ a solution to your problem?
Aug
16
comment How to understand the combination formula?
@Zen Nice to hear that. Always happy to help.
Aug
15
answered How and why can a true statement *never* imply something false?
Aug
14
answered How do get eigenvalues of a matrix B if add a row/column pair of a matrix A?
Aug
14
answered Solving a Recursive equation, wrong options?
Aug
14
answered Alternate Proof for $e^x \ge x+1$
Aug
13
answered Transpose : Matrices and Orders of
Aug
12
revised $2x^{1/3} = 3y^{1/5}$, What is largest possible integer of $xy$?
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Aug
12
comment Can't understand an exercise concerning equivalence relations
@Graduate Write the question.
Aug
12
comment Can't understand an exercise concerning equivalence relations
with 635 points, you are no longer a novice on this site and should know how to use MathJax.
Aug
12
comment Finding a two-digit number.
Hi and welcome to the site! Since this is a site that encourages learning, you will get much more help if you show us what you have already done. Could you edit your question with your thoughts and ideas?
Aug
12
comment The modulus of complex number?
@GaneshUjwal If you do not want your question to be deleted, you have to provide proof that you did some work on your own.
Aug
12
revised In how many of the possible arrangements will both end balls be of the same colour?
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Aug
12
answered Find the largest $n\in \Bbb{N}$ answering the following terms
Aug
12
revised Find the largest $n\in \Bbb{N}$ answering the following terms
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Aug
12
reviewed Close Can the graph of a function have more than one oblique asymptote?
Aug
12
reviewed Leave Open Given $P$ idempotent, show that $I-P$ is idempotent.
Aug
12
reviewed Leave Open Proof by induction: $n$th Fibonacci number is at most $ 2^n$
Aug
12
reviewed Leave Open Find all group homomorphisms from $\mathbb{Z}^n$ to $ \mathbb{Z}^n$
Aug
12
answered How to understand the combination formula?