or this question, i found that my coefficient of x^4 is wrong... after applying the maclaurin series formula, i would get the coefficient of X^4 is -5/96.... but the exact ans is -1/96... can anyone check which part is wrong?
for this, my coefficient of x^4 which is 8/4! = 1/3 .. but the ans should be 13/24... can you tell me which part contain mistake? or any shortcut to do this question rather than perform so many times of implicit differentiation?
for the question y= cos x )^0.5 , to find the coeffeicient of x^3 and X^4 , must using the equation of proven part to proceed... can you do it from that part please?