Cari magnitud |a| vektor a = (−3, 4, −2).
Lembaran kerja Vektor: hasil darab titik & silang dengan jawapan
1.Mudah
a = (−3, 4, −2)
|a| =
2.Mudah
Cari komponen-y ûy bagi vektor unit û yang menghala ke arah a = (3, 7, 7).
a = (3, 7, 7)
ûy =
3.Sederhana
Cari hasil darab titik a·b bagi a = (−3, −7, 1) dan b = (5, 0, 6).
a = (−3, −7, 1)b = (5, 0, 6)
a·b =
4.Sederhana
Cari sudut θ antara vektor a = (−6, 0, 3) dan b = (−4, −2, −4), dalam darjah.
a = (−6, 0, 3)b = (−4, −2, −4)
θ = °
5.Sukar
Bagi a = (−3, 6, −6) dan b = (0, −1, 6), cari komponen-z (a × b)z hasil darab silang a × b.
a = (−3, 6, −6)b = (0, −1, 6)
(a × b)z =
6.Sukar
Bagi a = (6, −6, −3) dan b = (0, −4, −6), cari komponen-x (a × b)x hasil darab silang a × b.
a = (6, −6, −3)b = (0, −4, −6)
(a × b)x =
Kunci jawapan
- 1. |a| = 5.385
- 2. ûy = 0.6767
- 3. a·b = −9
- 4. θ = 72.65 °
- 5. (a × b)z = 3
- 6. (a × b)x = 24
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