1)find without l′hopital
lim_(x→0) ((2(√(x+1))−((x+1))^(1/3) −((x+1))^(1/4) )/x)
2) prove that the general solution for tbe differential equation
(1+y^2 )+(1+x^2 )((dy/dx))=0 is y=((k−x)/(1+kx)),k is a constant
then find the special solution if y=(2/(3 )) when x=1
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