Questions asked by Parish

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• Evaluate #int3sin^3(3x)cos^3(3x)dx#?
  
• Evaluate the integral 16tan^3xdx?
  
• Evaluate the integral sin(12x)cos(3x)dx?
  
• Express the integrand as a sum of partial fractions and evaluate the integral. Integral (6x^2+2x+7)/(x^3-1)?
  
• Evaluate #int(9e^(9t))/(e^(18t)+11e^(9t)+18)dt#?
  
• Use an appropriate substitution and then a trigonometric substitution to evaluate the following integral? #int \ x^3/(sqrt(49+x^8)) \ dx#
  
• Evaluate the integral #int2x(ln(x^9))^2dx#?
  
• Evaluate #int_(pi/2)^(pi/4)19xsqrt(1-cos(2x)dx# ?