Choánhxạtuyếntính f :R3 →R3 vàhaicơsởcủa R3 : B={b1 =(1,3,3),b2 =(−n,6,5),b3 =(1,2,2)}, C ={c1 =(2,−n+3,3),c2 =(−5,−1,−5),c3 =(1,0,1)}. Biết: f(b1)=(−5,6,4), f(b2)=(−8,5,2), f(b3)=(−9,−2,−5).
a. Tìmmatrận A=[f]E3 ,từđósuyrabiểuthứccủa f(x1,x2,x3). 1/2

b. Tìm ma trận [ f ]B .
c. Từ [f] ,hãytínhmatrận [f]C .
BB
d. Chovector x=(−2,3,n),hãytính [x]B vàsuyra [f(x)]C .

b

step-by-step explanation:

a difference is the result of subtraction. while each of these expressions has subtraction in it, a difference will be the result when subtraction is the last operation applied in the order of operations for the expression. this means subtraction must be outside of the parenthesis. only b has this.

false

step-by-step explanation:

the reason i say this is because for a certain length of sides you can pick any two and the length is wither equal or greater than the third side and in this case it's not.

3 + 5 = 8

8 is smaller than 9 which is the third side.

hope this : )