求1,2,3,4,5,6对模7的指数分别是\(\delta\)7(1)=1,\(\delta\)7(2)=3,\(\delta\)7(3)=6,\(\delta\)7(4)=3,\(\delta\)7(5)=6,\(\delta\)7(6)=2.
正确
设(3(alpha_{1}-alpha)+2(alpha_{2}+alpha)=5(alpha_{3}+alpha),)试求向量`alpha=`_____,其中`alpha_{1}=(2,5,1,3)^{T},alpha_{2}=(10,1,5,10)^{T}`,(alpha_{3}=(4,1,-1,1)^{T}。)