Symbolab differential equation solver

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Symbolab is a godsend. 

In Exercise 2.06 I had a lot of differential equations to solve and inevitably made a few mistakes. 

Here's a sample. 

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Or see the full text in Ex 2.06 Helix.pdf. 

Praise be to Symbolab!

Find them at https://www.symbolab.com/solver/ordinary-differential-equation-calculator