Actualizar 'Questions.txt'

2017-11-16 17:43:01 +00:00 · 2017-11-16 17:43:01 +00:00 · 7b189275b2
commit 7b189275b2
parent c456e82423
1 changed files with 4 additions and 1 deletions
--- a/Questions.txt
+++ b/Questions.txt
@ -90,7 +90,10 @@ Esto es una ecuación derivadas
 + Solve equation \frac{d^2 u}{dx^2}-x\frac{du}{dx}+u=0

 #08
-
+Preguntar si:
+(x, y) \ mapsto x ^ 2 + y ^ 2
+(x, y) \ mapsto x ^ 2-y ^ 2 + 2 x y ^ 2 + 1.
+Son correctos   

 #09