Cho ánh xạ tuyến tính f có ma trận biểu diễn là A =


1 −4 15
−1 −22 20
1 −25 22


theo cơ sở a1 = (8, −6, 7), a2 = (−16, 7, −13) và a3 = (9, −3, 7). Tìm ma
trận của f theo cơ sở
b1 = (1, −2, 1); b2 = (3, −1, 2); b3 = (2, 1, 2)

Someone answer asap for ! a discount store’s prices are 25% lower than department store prices. the function c(x) = 0.75x can be used to determine the cost c, in dollars, of an item, where x is the department store price, in dollars. if the item has not sold in one month, the discount store takes an additional 20% off the discounted price and an additional $5 off the total purchase. the function d(y) = 0.80y - 5 can be used to find d, the cost, in dollars, of an item that has not been sold for a month, where y is the discount store price, in dollars. create a function d(c(x)) that represents the final price of an item when a costumer buys an item that has been in the discount store for a month. d(c(x)) =

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Determine the solution for mc001-1.jpeg