เวกเตอร์ 1 หน่วย
1. กำหนดให้ A = 7j + 9k จงหา ขนาดและทิศทางของเวกเตอร์ A
…………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………..................................................................................................................................................................................................................................................................................................................................................................................................................................................................
2. ถ้า A = 3i + 8j - 6k จงหาขนาดและทิศทางของเวกเตอร์ A
………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………….................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
3. กำหนดให้ และ จงคำนวณหา
1.1 ขนาดของเวกเตอร์ A + B 1.2 ขนาดของเวกเตอร์ 3A – 2B
…………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………..................................................................................................................................................................................................................................................................................................................................................................................................................................................................
4. กำหนดให้ และ จงคำนวณหา
= …………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………..............................................................................................................
= [………………….] + [………………….] + [……………….]
=…………………………………………………………………..
4.1 หา / / = … ………………………………………………………………………………
……………………………………………………………………………………………………………………………………………………………………………………………………………………………………………….……………………………………………………………………………………..…………………………………………………………….…
4.2 = (ax bx) + (ay by) + (az bz)
= [........................................... ] + [(.....................................)] + [....................................]
= ......................................................................................................................................
= ......................................................................................................................................
แก้ไงครับช่วยหน่อย
1. กำหนดให้ A = 7j + 9k จงหา ขนาดและทิศทางของเวกเตอร์ A
…………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………..................................................................................................................................................................................................................................................................................................................................................................................................................................................................
2. ถ้า A = 3i + 8j - 6k จงหาขนาดและทิศทางของเวกเตอร์ A
………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………….................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
3. กำหนดให้ และ จงคำนวณหา
1.1 ขนาดของเวกเตอร์ A + B 1.2 ขนาดของเวกเตอร์ 3A – 2B
…………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………..................................................................................................................................................................................................................................................................................................................................................................................................................................................................
4. กำหนดให้ และ จงคำนวณหา
= …………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………..............................................................................................................
= [………………….] + [………………….] + [……………….]
=…………………………………………………………………..
4.1 หา / / = … ………………………………………………………………………………
……………………………………………………………………………………………………………………………………………………………………………………………………………………………………………….……………………………………………………………………………………..…………………………………………………………….…
4.2 = (ax bx) + (ay by) + (az bz)
= [........................................... ] + [(.....................................)] + [....................................]
= ......................................................................................................................................
= ......................................................................................................................................