4ç« ã®演習å•Â題（全å•Â）
4ç« ã®演習å•Â題（全å•Â）
4ç« ã®演習å•Â題（全å•Â）
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= + + +<br />
2<br />
t ax bx c ax<br />
⇒ − = + + ⇒ −2<br />
⋅ + = + +<br />
2 2 2 2<br />
t ax ax bx c t t ax ax ax bx c<br />
⇒ −2 ⋅ = + ⇒ − = + 2 ⋅ = ( + 2 )<br />
2 2<br />
t t ax bx c t c bx t ax b at x<br />
2<br />
t − c<br />
⇒ x= : x<br />
b + 2 at<br />
−2<br />
⋅ = +<br />
2<br />
t t ax bx c<br />
⇒ 2tdt −2 a ⋅tdx −2 a ⋅ xdt = bdx ⇒2( t − a ⋅ x) dt = ( b + 2 a ⋅t)<br />
dx<br />
⎛<br />
2⎜t−<br />
2( t−<br />
a⋅x)<br />
⇒ dx = dt =<br />
⎝<br />
b+ 2 a⋅t<br />
2 + − ⋅ + ⋅ + +<br />
= 2 dt = 2<br />
2<br />
⎛ t − c ⎞⎞<br />
a⋅⎜ ⎟ ⎟<br />
2<br />
⎝b+<br />
2 at⎠⎠<br />
t b+ 2 at − a t −c<br />
dt = 2<br />
2<br />
b+ 2 a⋅ t b+ 2 a⋅t<br />
2 2 2<br />
at bt a t c a a t bt c a<br />
( b+ 2 a⋅ t) ( b+ 2 a⋅t)<br />
2 2<br />
<br />
dx t dt<br />
( ) ( )<br />
( )<br />
dt<br />
dt<br />
= + + +<br />
2<br />
t ax bx c ax<br />
2 2<br />
( 2 ) ( )<br />
2<br />
( b+ 2 at) t− a( t −c)<br />
t − c<br />
⇒ + + = − = − =<br />
2 2<br />
2<br />
2<br />
ax bx c t ax t a<br />
b + at b + at<br />
bt + a ⋅t − a t −c 2<br />
a⋅ t + bt+<br />
c a<br />
= =<br />
b+<br />
2 at<br />
b+<br />
2 at<br />
: <br />
2<br />
ax + bx + c
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