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 Feb8 comment If $a,b,c\neq0$, prove that $ac\mid bc \iff a\mid b$ thank you very much :) Feb8 comment If $a,b,c\neq0$, prove that $ac\mid bc \iff a\mid b$ @Ale oh, thank you so much.I noticed :) Feb8 comment If $a,b,c\neq0$, prove that $ac\mid bc \iff a\mid b$ what is $k$ in your answer? Feb8 comment If $a,b,c\neq0$, prove that $ac\mid bc \iff a\mid b$ thank you, sorry I am a beginner. Please explain more. so sorry. Sep2 comment Show that the mapping $x\rightarrow x^{-1}$ of $G$ onto $G$ is an isomorphism iff $G$ is abelian @amWhy $~~+^+_+~~$ Sep2 comment Specify the Poincaré line @amWhy :)${~~~~~~}$ Sep2 comment bernoulli equations1 @amWhy thank you so much my dear ! Sep2 comment Homogeneous equation3 @amWhy ;))))) thanks. Sep1 comment What do we mean when we say “for all n where n is an element of…” $~~+1^♥~~$ for you :) Sep1 comment Help with finding the volume of the region: $y=\ln(3x), y=2, y=5, x=0$ $\color{blue}{@amWhy}+_+$ Aug31 comment Don't know how to find all the roots @amWhy $\Large{+}^+$ ;) Aug30 comment If $aH = Hb$ for all $a,b \in G$, prove that $aH = Ha$. @amWhy + great work ;) Aug28 comment Finding minima and maxima of $\frac{e^{1/({1-x^2})}}{1+x^2}$ @amWhy: $\Large{+1}$ Aug28 comment Boolean Algebra-Simplification Assistance Needed $\Large{+}^\infty$ Aug28 comment Counting Question @amWhy +1 for you.I agree with Babak S. , I don't like probability too. :D Aug28 comment Need this term simplified: $4n^2 \cdot 3n^4 - 5n^6$ $\Large\overbrace{+}$ Aug27 comment Is $d^2y/dx$ a valid mathematical notation? @amWhy $\huge{+}$ Aug27 comment How do I compute $\int_{-x^2}^{0}f(t)dt$ derivative ratio $x$? Thank you very much. Your explanation was very thorough and comprehensive.+1 for you Aug27 comment Divide polynomials with exponents and simplify I'm always eager to see your answers because they are so beautiful and perfect so $\color{green}{+1}$ Aug27 comment Multiplying and simplifying expressions very nice work $\Large\color{blue}{+1}$ ;)