396 reputation
312
bio website
location Vietnam
age
visits member for 2 years, 10 months
seen Dec 10 at 18:15

Jun
8
asked Lagrange's method to find min/max question
Jun
7
accepted Partial Derivation: $\lim_{(x,y)\to(0,0)}\frac{x^2+\sin^2y}{2x^2+y}$
Jun
7
asked Partial Derivation: $\lim_{(x,y)\to(0,0)}\frac{x^2+\sin^2y}{2x^2+y}$
Jun
4
accepted Sum of two divergence series is always divergence series?
Jun
3
comment Sum of two divergence series is always divergence series?
@Marvis Oh. sorry so much :( I always think two examples is same :(
Jun
3
comment Sum of two divergence series is always divergence series?
Take opposite of series and plus together is too special in my opinion.
Jun
3
comment Sum of two divergence series is always divergence series?
@DavidMitra yes. I have thought your example before, but it's too special.
Jun
3
asked Sum of two divergence series is always divergence series?
May
30
accepted Maple: how to solving composite function
May
28
comment Maple: how to solving composite function
No. I don't think it's just for fun. it's nice. but I don't know your solution compare to first one (above post) will be same performance or not :)
May
28
comment Maple: how to solving composite function
Can you explain a bit at line 3 and 4,please. I know how they work, but I really don't understand why it works right. I'm thinking about your nice solution so much. Thanks :)
May
28
asked Maple: how to solving composite function
May
22
accepted Evaluating $\int_{0}^{1} \sqrt{1+x^2} \text{ dx}$
May
22
accepted Compute lim from Graph
May
22
accepted Min/Max of $f(x,y) = e^{xy}$ where $x^3+y^3=16$
May
20
comment Min/Max of $f(x,y) = e^{xy}$ where $x^3+y^3=16$
Oh. It likes x=y=2 case when I use Lagrange Multiplier. But at min case, I don't have any idea how to solve by Lagrange Multiplier
May
20
awarded  Editor
May
20
revised Min/Max of $f(x,y) = e^{xy}$ where $x^3+y^3=16$
added 25 characters in body
May
20
comment Min/Max of $f(x,y) = e^{xy}$ where $x^3+y^3=16$
@N.I ah, I understand. Because I just view fomular from other post , I don't really know different $$ and $ :D
May
20
asked Min/Max of $f(x,y) = e^{xy}$ where $x^3+y^3=16$