$x=aco{s}^3(t)$

$y=asi{n}^3(t)$ parametrik denklemleri ile verilmi$$ e$$ri i$$in $\frac{d^{2}y}{d{x}^2}=?$

a$)\frac{1}{3a}se{c}^4(t)csc(t)$

b$)\frac{1}{2a}se{c}^3(t)csc(t)$

c$)\frac{1}{3a}cs{c}^4(t)sec(t)$

d$)\frac{1}{3a}si{n}^4(t)sec(t)$

e$)\frac{1}{3a}co{s}^4(t)csc(t)$