Best technical reference and teaching app in existence.
I am a perpetual teacher and student. This app is indispensable in any collegiate arena. This app allowed me to tutor a hearing impaired student in undergraduate calculus AND business finance. The student went from a 2.1 gap to a 3.6, and this app is the medium that facilities her academic success. A must have. If a more in-depth study is needed, the WolframAlpha website is ready to meet the challenge.
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WolframAlpha Classic, v1.6.4