Page 12 - BUKU KALIN (bismillah Fix)_Bab 5
P. 12
Menentukan panjang busur :
2
√
= ∫ 1 + ( )
3
1 2
√
= ∫ 1 + ( 2)
0
3
= ∫ √1 +
0
3
1
= ∫(1 + ) 2
0
2 3 3
= [ ( 1 + ) 2]
3 0
2 3 2 3
= [ ( 1 + 3 ) 2] − [ ( 1 + 0 ) 2]
3 3
2 2
= [ ∙ 8] − [ ∙ 1]
3 3
2
= ∙ 7
3
14
=
3
