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7h
comment How to declare a function as real in order to get rid of Conjugate in front of the expressions?
You probably meant $Assumptions
9h
revised Non-autonomous Dynamical system Sliding mode controller Error
added 24 characters in body
9h
answered Non-autonomous Dynamical system Sliding mode controller Error
9h
revised Ndsolve problem with Sign
added 6 characters in body
10h
answered Ndsolve problem with Sign
10h
revised Ndsolve problem with Sign
added 3 characters in body
11h
revised What is wrong with this simple FindRoot?
deleted 139 characters in body
11h
revised Solving a differential equation with NDSolve and plotting it WITH the use of Manipulate
deleted 9 characters in body
20h
comment Minimax for conditioned UnitStep functions
I can't understand "a and b shall try to maximize the value of the function; c and d shall try to minimize the value of the function."
20h
revised Minimax for conditioned UnitStep functions
deleted 53 characters in body
2d
comment First Plot misses the Show
Try for example g5 = ContourPlot[Cos[x] Sin[y], {x, 0, 2 Pi}, {y, 0, 2 Pi}] /. x : RGBColor[__] :> Sequence[x, Opacity[.5]]
2d
awarded  Good Answer
2d
comment Find the tangent at a homogenous point to a curve
@Guesswhoitis. Unless you work mod 16367
2d
comment Find the tangent at a homogenous point to a curve
You need at least a very basic grasp on the syntax before asking a question
2d
revised Find the tangent at a homogenous point to a curve
added 8 characters in body
2d
revised Plot is discontinuous (it shouldn't be)
added 34 characters in body
2d
comment Plot is discontinuous (it shouldn't be)
Now your gedanken model got the Gedanken Graphics(tm) upgrade. Nice!
2d
comment ParametricNDSolve of differential equation with singularity
NDSolve's integration tricks are Legion. It's very difficult to tell which strategy can solve your problem without taking a look at the expressions.
2d
revised Finding the conditions for degenerate solutions to a cubic equation
added 13 characters in body
2d
revised Finding the conditions for degenerate solutions to a cubic equation
edited title