Answers created by Michael G.

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• What is #int ln(x^2+4)dx#?
  
• How do you integrate #int x^2/sqrt(4x^2+25)dx# using trigonometric substitution?
  
• How do you integrate #int e^x/(7+e^(2x))# by trigonometric substitution?
  
• How do capacitors store energy?
  
• How to differentiate?
  
• How do you solve #4c^2 + 10c = -7# by completing the square?