=13/6у-(7х-7/4у)+11/5х=13/6у-7х+7/4у+11/5х=47/12у-24/5х
y'=1/2√x * lnx + √x*1/x
y'(x0) = 1/2√1 * ln1 + √1 * 1/1 = 1/2* 0 + 1*1 = 0+1=1