Global Maximum/Minimum and tangent

Is there any chance you could upload a worksheet?

You are likely to attract more interest if a worksheet of the problem is included.

Mike

Simon Kohn wrote: Hello together, hopefully the last question concerning my diplome thesis: Does Mathcad 15 have a function to find the (Global) Maximum/Minimum of an analytic function, like f(x) = x^3 + x^2 - 4 . I need the x-Value and the y - Value of the Maximum/Minimum. And additionally, I need to find the tangent from the point of origin to an analytic function, like g(x) = x^2 + 4x -10 . So I need to point at which the tangent touches the given function. Thanks a lot, Simon

It has symbolic differentiation.

Stuart

Does Mathcad 15 have a function to find the (Global) Maximum/Minimum of an analytic function, like f(x) = x^3 + x^2 - 4 . I need the x-Value and the y - Value of the Maximum/Minimum.

You need to be more specific about what you are trying to achieve, Mathcad has functions that will find maxima or minima of functions (including functions of more than one variable) within a given interval. It has a function that will give you all the roots of a polynomial. For many functions you could find the global maxima and minima by using symbolic differentiation. That is not going to work for every function though.

And additionally, I need to find the tangent from the point of origin to an analytic function, like g(x) = x^2 + 4x -10 . So I need to point at which the tangent touches the given function.

There is no built in function to do this, but one could be written. But there may be no such tangent (for example a circle that encloses the origin), there may be more than one such tangent (for example a circle that does not enclose the origin), or there may even be an infinite number of such tangents (e.g the sin function). So, again, you need to be more specific.

Simon Kohn wrote: Does Mathcad 15 have a function to find the (Global) Maximum/Minimum of an analytic function

You can work with user function - with genetic algorithm for example:

http://twtmas.mpei.ac.ru/mas/Worksheets/Minimum.mcd