Page 14 - e-modul turunan fungsi aljabar

CONTOH SOAL

Carilah jika :

2
a. = 4 5 + 3

b. = 2 + 1 − 4

2
c. = ( − 5)(2 − 7)

Penyelesaian:

2
a. = 4(5 + 3)

Misal : = 4 → = 8
2
′
= 5 + 3 → = 5
′
, maka = +
Jadi jika y = u .v ′ ′ ′

2
′
= 8 5 + 3 + 4 5
= 40 + 24 + 20
′
2
2

2
′
2
= 60 + 24 = 60 + 24

b. = (2 + 1)( − 4)

Misal: = 2 + 1 → = 2
′

= − 4 → = 1
′

Jadi jika y = u .v ′ ′ ′
, maka = +
= 2( − 40 = 2 + 1 1
′

= 2 − 8 + 2 + 1
′
= 4 − 7 4 − 7
′

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