Diketahui : vektor a = [1]
[3]
vektor b = [3]
[-4]
vektor c = [2]
[-1]
a. tentukan n jika = na+b-c = [3]
[3]
b. tentukanlah m dan n jika a+mb-nc = [6]
[-7]
tolong dibantuu yahhh,plis beaok mau dikumpul
[3]
vektor b = [3]
[-4]
vektor c = [2]
[-1]
a. tentukan n jika = na+b-c = [3]
[3]
b. tentukanlah m dan n jika a+mb-nc = [6]
[-7]
tolong dibantuu yahhh,plis beaok mau dikumpul
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a = i + 3j
b = 3i - 4j
c = 2i -j
na +b -c = 3i + 3j
n(i + 3j) + 3i - 4j -2i + j = 3i + 3j
n(i + 3j) + i - 3j = 3i + 3j
n(i + 3j) = 2i + 6j
n = (2i + 6j)/(i + 3j)
n = 2
b) a + mb - nc = 6i -7j
i+3j m(3i-4j) - n(2i-j) = 6i-7j;
m(3i - 4j) - n(2i-j) = 5i-10j
3mi - 4mj - 2ni +nj = 5i-10j;
i(3m - 2n)+j(-4m+n)= 5i -10j;
* 3m-2n = 5
* -4m+n = -10
m = 3 dan n = 2