Function curve tangent

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This is not an object but the result of an internal construction allowing you creating a tangent to a unction curve through the abscissa of the point.

Click on the tool .

A dialog box pops up.

Select the function and the frame.

Enter the abscissa of the point. It may a reference to an already existing value or a calculus. In the second case a new calculus will be created name of which will start with abs.

Enter a name for the calculus that will contain the slope of the line created.


To be noticed : For the tangent to be created, MathGraph32 computes the formal derivative of the function. Sometimes, it may happen that the tangent will not exist while it should. For example, if f(x)=x*sqrt(x), the tangent at point of abscissa 0 will not exist while it should.

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