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 Jun8 comment Lagrange's method to find min/max question can you give me an example, please. My teacher says the thing opposite :( that we can sure that no max for that function (in above example) Jun8 asked Lagrange's method to find min/max question Jun7 accepted Partial Derivation: $\lim_{(x,y)\to(0,0)}\frac{x^2+\sin^2y}{2x^2+y}$ Jun7 asked Partial Derivation: $\lim_{(x,y)\to(0,0)}\frac{x^2+\sin^2y}{2x^2+y}$ Jun4 accepted Sum of two divergence series is always divergence series? Jun3 comment Sum of two divergence series is always divergence series? @Marvis Oh. sorry so much :( I always think two examples is same :( Jun3 comment Sum of two divergence series is always divergence series? Take opposite of series and plus together is too special in my opinion. Jun3 comment Sum of two divergence series is always divergence series? @DavidMitra yes. I have thought your example before, but it's too special. Jun3 asked Sum of two divergence series is always divergence series? May30 accepted Maple: how to solving composite function May28 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 :) May28 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 :) May28 asked Maple: how to solving composite function May22 accepted Evaluating $\int_{0}^{1} \sqrt{1+x^2} \text{ dx}$ May22 accepted Compute lim from Graph May22 accepted Min/Max of $f(x,y) = e^{xy}$ where $x^3+y^3=16$ May20 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 May20 awarded Editor May20 revised Min/Max of $f(x,y) = e^{xy}$ where $x^3+y^3=16$ added 25 characters in body May20 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