(2) f(x) = ²x cOST
f(x)= e²x cost
f'(x)
f(0) = 1
(exicosx teatsink
2x
2ẻ cost teshx
f(0) = 2
p" (a) = (2ezy cost + (2e2x)( cosxít (ezisine tết chí
2x
=
4e2x cosx-22ht + 20²0+ per cost
4e2x cost + e27
cost
sezx sinx
=
3
xの項まで
fill (X) = 10 ezx cost
f" (0)=5
pll (0) = (0
f(x) = 1 + 2 + + 5 ₁ 2 1² + 10² 32 3
21
1+2x+1/2x2+1/24×3
