Calculate Derivatives and Integrals Online

If you want to check if your calculation of derivatives or integrals is correct, you  might want to check out Online Derivative Calculator and Integral Derivative Calculator.

derivatives calculator

The Derivative Calculator lets you calculate derivatives of functions. It supports calculations of first, second, and partial derivatives.  The Integral Calculator on the other hand supports definite and indefinite integrals as well as integrating functions of many variables.

Both calculators can be tools for students; students can check their answers to calculus exercises. Note that both calculators do not show step by step solutions, so “they are not meant to be used for cheating.”

Printable Graphing Papers for Free

I was looking for a graphing paper online yesterday and I came across with Print Free Graph Paper website.  The site lets the users customize their graphing paper through drop down list boxes of choices. In the boxes, you may choose the type graphing paper, the size, measuring units and graph paper type. The output is a PDF file which can be printed.

The Smith Chart

The site supports the following types of graphing papers: Cartesian,Engineering, Polar, Isometric, Hexagonal, Logarithmic, Probability and even Smith Chart for electrical engineers (see figure above).

GeoGebra 4.2 Sneak Peek 4: Defaults and Advanced Sections

This is the fourth part of the GeoGebra 4.2 Sneak Peek Series.  In the second and third part of this series, we have discussed about the Object Properties as well as Graphics and Layout sections. These sections are tabs located in the GeoGebra Preferences window. In this post, we discuss the remaining two  more sections of the Preferences window, the Defaults and Advanced sections.

GeoGebra Preferences (Default)

The Preferences window can be displayed by right clicking an object and then clicking Object Properties in the context menu. It can also be displayed using the  the View menu and the choosing Advanced or using the Preferences icon located at the upper-right part of the Graphics view. » Read more

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