位置:
x
(
t
)
=
a
0
+
a
1
t
+
a
2
t
2
+
a
3
t
3
+
a
4
t
4
+
a
t
5
x(t) = a_0 + a_1t + a_2 t^2 + a_3 t^3 + a_4 t^4 + a_ t^5
x(t)=a0+a1t+a2t2+a3t3+a4t4+at5
y
(
t
)
=
b
0
+
b
1
t
+
b
2
t
2
+
b
3
t
3
+
b
4
t
4
+
b
t
5
y(t) = b_0 + b_1t + b_2 t^2 + b_3 t^3 + b_4 t^4 + b_ t^5
y(t)=b0+b1t+b2t2+b3t3+b4t4+bt5 速度:
x
′
(
t
)
=
a
1
+
2
a
2
t
+
3
a
3
t
2
+
4
a
4
t
3
+
5
a
t
4
x'(t) = a_1 + 2a_2 t + 3a_3 t^2 + 4a_4 t^3 + 5a_ t^4
x′(t)=a1+2a2t+3a3t2+4a4t3+5at4
y
′
(
t
)
=
b
1
+
2
b
2
t
+
3
b
3
t
2
+
4
b
4
t
3
+
5
b
t
4
y'(t) = b_1 + 2b_2 t + 3b_3 t^2 + 4b_4 t^3 + 5b_ t^4
y′(t)=b1+2b2t+3b3t2+4b4t3+5bt4 加速度:
x
′
′
(
t
)
=
2
a
2
+
6
a
3
t
+
12
a
4
t
2
+
20
a
t
3
x''(t) = 2a_2 + 6a_3 t + 12a_4 t^2 + 20a_ t^3
x′′(t)=2a2+6a3t+12a4t2+20at3
y
′
′
(
t
)
=
2
b
2
+
6
b
3
t
+
12
b
4
t
2
+
20
b
t
3
y''(t) = 2b_2 + 6b_3 t + 12b_4 t^2 + 20b_ t^3
y′′(t)=2b2+6b3t+12b4t2+20bt3
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