[微分] 有些題目不會寫!!....
1.
Set f(x)= cosx. Show that finding f'(0) from the definition of
derivative amounts to finding
cosx - 1
lim ----------
x→0 x
2. 2
d [ 2 d ]
---- [ t ---- (t cos3t) ]
[ ] .....這樣寫不知道看不看得懂!!= =...
dt [ 2 ]
dt
--
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