jawaban 1731130120 Syayid Abdurahman
https://elektromagnetiksamodro.blogspot.com/2018/09/soal-1731130025-ahmad-thoriq-al-wahid.html?m=1
SOAL: NO 1 MEDAN ELEKTRO
Diketahui A=5i+3j, B=2i-4j cari nilai :
1. B+A dan |B+A|
jawab
2i-4j+3jx|2i-4j+5i+3j|
https://elektromagnetiksamodro.blogspot.com/2018/09/1731130009-fama-dwi-wahyuningsih.html?m=1
SOAL NO 2 MEDAN
ELEKTRO
2.) Diketahui3 buah
vektor :
A = 2i + 3j - 2k
B = 6i + 2j + 2k
C = 3j - 4k
Tentukan A(B×C) !
A = 2i + 3j - 2k
B = 6i + 2j + 2k
C = 3j - 4k
Tentukan A(B×C) !
JAWAB:
A (BxC) = 2i+3J-2K(6i+2J+2K)x(3J-4K)
= 2i+3J-2K(18K+24J+0+8i-6i-0)
= 2i+3J-2K(18K+2J+2i)
= (-0+0+4)+(0+6-0)-(36+0-0)
= 4+6.36
= -26