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compute the product using a the definition where ax is the linear comb

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Complex Analysis

Compute the product using (a) the definition where Ax is the linear combination of the columns of A using the corresponding entries in x as weights, and (b) the row-vector rule for computing Ax. If a product is undefined, explain why.

(a) Compute the product using the definition where Ax is the linear combination of the columns of A using the corresponding entries in x as weights. If the product sun defined, explain why. Select the correct choice below and, if necessary, fill in any answer boxes to complete your choice.

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B. The matrix-vector Ax is not defined because the number of rows in matrix A does not match the number of entries in the vector x.

The matrix-vector Ax is not defined because the number of columns in matrix A does not match the number of entries in the vector x.

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Question 39041

Complex Analysis

a) Let C be a set, and A and B be disjoint sets. Find a bijection vh: CA × CB → CAUB¸ and show that it is well-defined, injective,and surjective.
(b) Denote by |X| the cardinality of a set X.
(i) Let A, B, C, and D be sets such that |A| = |B| and |C| =|D]. Prove that
|Ac| = |Bd
(ii) Find a pair of sets A and B so that |A| < |B|, but |AN| =|B]. Find an example where B is countably infinite. (Noproof is necessary.)
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Complex Analysis

2. If arctan x =y, what is cos y?

Complex Analysis

1. The tide in a river has a 60-cm variation from high tide to low tide. During a 24 hour period, there are two high tides and two low tides. The lowest tide of the river is 11cm and the tidal patterns form a sinusoidal wave. At 1 am, the tide is halfway between high and low tide and dropping.
(a) Sketch a graph of at least one period of this function. Label your graph and define your variables. Let t represent the number of hours since midnight.
(b) Write two different equations that could represent the situation above.
(c) A fisherman prefers to go fishing when the tide is approximately 25cm. Calculate one time when this occurs (give both an exact answer and an answer rounded to two decimal places).

Complex Analysis

(2) Let AABC be an isosceles triangle with AB = AC. Let BM be thealtitude from B on AC and CN be the altitude from C on AB. Show thatBM CN.

Complex Analysis

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Complex Analysis

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a. What are the dimensions of the desk, to the nearest tenth of a centimetre?
b. What is the minimum perimeter of the desk?(2 marks)

Complex Analysis

Ainsley has 20 m of fencing which he can use to surround a rectangular garden. What is the maximum area of the garden, assuming Ainsley uses fencing for all four sides?

Complex Analysis

13. An 8 m ladder is leaning against a wall. The foot of the ladder is 6 m from the wall.
a) How far up the wall does the ladder reach? Round your answer to one decimal place. Include a diagram with your solution.(3 marks)
b) What is the angle of elevation of the ladder? Round to the nearest whole number.

Complex Analysis

12. The point R(-5,6) lies on the terminal arm of an angle, 0, in standard position. Determine the primary trigonometric ratios of 0 to four decimal places. (4 marks)

Complex Analysis

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