Answers edited by Psykolord1989 .

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• How do you differentiate #f(x)= (1 + sin^2x)/(1 - sin2x) # using the quotient rule?
  
• How do you solve #x^2 - 6x + 4 = 0# by completing the square ?
  
• How do you use the quotient rule to find the derivative of #y=(1+cos(x))/(1+sin(x))# ?
  
• Question #bc838
  
• How do you find the instantaneous rate of change of #w# with respect to #z# for #w=1/z+z/2#?
  
• How do you find the derivative of #y=ln(t)/t^2#?
  
• Question #3b779
  
• How do you find the sum of #Sigma 10# where k is [1,4]?
  
• Question #84eab
  
• Question #d0c3c
  
• How do you find the critical points of a rational function?
  
• If #f(x)= - e^x # and #g(x) =1 / sqrt(1-x #, how do you differentiate #f(g(x)) # using the chain rule?