i need solution step by step plz !!

Question 3 Not yet ar Marled out of 15.00 Consider the following differential equation +*+++ = 0,04 and un-3 A one paramter approximate solution is assumed where u(z) = (-) = 0+0+ Assumed 4 - End, 22-2) Find the residual function (R) and weight function w using the least square Method. Rad Queron Select one OR-(4+42+ - 2x) +222 w221 2+1) OR=1 4+4-22) 2-3-2, w=-*+&2 O R=(4+ 4+ 2) + ??-22w=212) R06-574-7 - 22) +-22, 23) R! 4-4-2) + 4 + 4y 2 BR +422)2014) Question 3 Not yet ar Marled out of 15.00 Consider the following differential equation +*+++ = 0,04 and un-3 A one paramter approximate solution is assumed where u(z) = (-) = 0+0+ Assumed 4 - End, 22-2) Find the residual function (R) and weight function w using the least square Method. Rad Queron Select one OR-(4+42+ - 2x) +222 w221 2+1) OR=1 4+4-22) 2-3-2, w=-*+&2 O R=(4+ 4+ 2) + ??-22w=212) R06-574-7 - 22) +-22, 23) R! 4-4-2) + 4 + 4y 2 BR +422)2014)