2.
​
In[]:=
x[t_]=Cos[πt];​​y[t_]=
3
t
+2t;​​Point0,
9
8
​​
y'[t]
x'[t]
​​
Out[]=
Point0,
9
8

Power
:Infinite expression
1
0
encountered.
Out[]=
ComplexInfinity