Recent content by Alexx1

I would prefer stating it in a constraint only using =/>=/<=/</> Do you know an alternative?

The thing is I need a constraint to use in the program IBM ILOG CPLEX Optimization Studio None of both constraints is accepted in CPLEX

How can we define a constraint saying: if b is larger than zero then y has to equal 1 if b is equal to zero then y has to equal 0 ? It concerns the following problem: b[i][k] = amount of vegetable i growing on patch k y[i][k] = 1 if vegetable i is grown on patch k = 0 otherwise So...

Thanks! Now I found it!

I have to find: \int_{0}^{2\pi}\sqrt{t^2+2} dt I found that \int \sqrt{t^2+2} dt = \frac{t\sqrt{t^2+2}}{2} - arcsin(\frac{t}{\sqrt{2}}) + c But when I fill in 2\pi I get: \frac{2\pi \sqrt{4\pi ^2+2}}{2}- arcsin(\frac{2\pi }{\sqrt{2}}) but arcsin(\frac{2\pi }{\sqrt{2}}) doesn't exist.. Have I...

I have to find: \int_{0}^{2\pi}\sqrt{t^2+2} dt I found that \int \sqrt{t^2+2} dt = \frac{t\sqrt{t^2+2}}{2} - arcsin(\frac{t}{\sqrt{2}}) + c But when I fill in 2\pi I get: \frac{2\pi \sqrt{4\pi ^2+2}}{2}- arcsin(\frac{2\pi }{\sqrt{2}}) but arcsin(\frac{2\pi }{\sqrt{2}}) doesn't exist...

Thank you very much!

Thank you very much! And how about this one? https://www.physicsforums.com/showthread.php?t=421612

How can the function f: ℝ² → ℝ : (x,y) |--> {{x^3-y^3}\over{x-y}} if x ≠ y be defined on the line y=x so that we get a continuous function?Is this correct?: If x=y --> f=0

Thx!

How can the function f: ℝ² → ℝ : (x,y) |--> {{x^2+y^2-(x^3y^3)}\over{x^2+y^2}} if (x,y) ≠ (0,0) be defined in the origin so that we get a continuous function?When I take 'x=y' (so (y,y)) and 'y=x' (so (x,x)) I get: {{2-y^4}\over{2}} and {{2-x^4}\over{2}} So for the first one I get '1'...

Thanks!

Is it -∞?

If I plot the function on my calculator, I thinks it's heading to -8, but I'm not sure

If you simplify them you get: log(sin(x/2)/(sin(x/2)+cos(x/2)) But if I fill in 0 than I get log(0) but that doesn't exist.. If I use a double angle formulae I also get log(0)