найти 2 производную {x = a(t – sin t) {y = a(1 – cos t)
x`t=a·(1–cost) y`t=a(–(–sint))=asint y`x=y`t/x`t=sint/·(1–cost) y``x=(y`x)`t/x`t= =((sint)`·(1–cost)–(1–cost)`·sint)/a·(1–cost)3= =(cost–cos2t–sin2t)/a(1–cost)3=(cost–1)/(a(1–cost)3=–1/(a·(1–cost)2)