Answers edited by Mark

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• What is the integral of #int ( 1 / (25 + x^2) ) dx #?
  
• How do you find the nth term of the sequence #2, 4, 16, 256, ...#?
  
• Question #b6651
  
• What is the implicit derivative of #3=(1-y)/x^2+xy #?
  
• How do you find the derivative of #h(x) = (x^(1/3)) / (x^2+1)#?