Questions asked by Armin Nahar Mim

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• #4y''+36y="cosec"(3x)#, can u please help me to solve this equation?
  
• #y''+9y=0#, #y_1=sin3x# by using reduction of order method how can I solve this equation?
  
• #xy^2*(dy/dx)=y^3-x^3, y(1)=2# (its a initial value problem) Any kind soul here who can give the solution of this eqn?
  
• How to find postfix of this equation 5+2/[3*{6+2+(5-3/2)-5}+2]-1*5 step by step?