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Hi everyone,

Please I have a problem to find a slope (Tangent line) of any linear function without using (x2-x1; y2-y1).

What I want is a function that can be applied in any position of any type of function, example: x

Thank you.

Please I have a problem to find a slope (Tangent line) of any linear function without using (x2-x1; y2-y1).

What I want is a function that can be applied in any position of any type of function, example: x

^{2}, 3x^{3}+sin(x), ln(x)+x^{3}, and so one. (Like as in this web page "Java Applet" : http://www.math.brown.edu/help/tangentline.html [Broken])Thank you.

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