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R - Multiplicação de Matrizes
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#Mutiplicação Matrizes | |
vet_a = c(333658,19960204,829,399097,1234) | |
vet_b = vet_a * 2 | |
vet_c = vet_b / 3 | |
vet_d = vet_c + vet_a^2 #or vet_a**2 | |
vet_e = sqrt(vet_d) | |
vet_ai = rev(vet_a) #or vet_a[5:1] | |
m1 = matrix(data = c(vet_a,vet_b,vet_c,vet_d,vet_e,vet_ai), | |
ncol = 5, nrow = 6, byrow = TRUE) | |
m2 = matrix(data = c(vet_a,vet_b,vet_c,vet_d,vet_e,vet_ai), | |
ncol = 6, nrow = 5) | |
m3 = m1 * 0.1 | |
m4 = as.matrix(attitude[10:14,1:6]) | |
#Multiplicação | |
m = m1 %*% m2 | |
#Sem % multiplica elemento por elemento | |
#Com % multiplica a matrix | |
m5 = m1 * m3 | |
m6 = m3 * m1 | |
m7 = m1 %*% m4 | |
m8 = m4 %*% m1 | |
m5 == m6 #TRUE | |
m7 == m8 #FALSE | |
#Matriz Transposta | |
m8 %*% t(m1) | |
#Matriz Diagonal | |
diag(c(2,4,8)) | |
#Matriz Inversa | |
solve() | |
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