Find the exact value of the expression.cos (-1050°)
A. 
B. 
C. - 
D. - 
Answer: B
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Provide an appropriate response.Which of the following statements is false?I. For a function f(x), the Taylor polynomial approximation can always be improved by increasing the degree of the polynomial.II. Of all polynomials of degree less than or equal to n, the Taylor polynomial of order n gives the best approximation of f(x).III. The Taylor series at x = a can be obtained by substituting x - a for x in the corresponding Maclaurin series.
A. I and II B. I, II, and III C. III only D. I and III
Use an Euler diagram to determine whether the syllogism is valid or invalid.Not all cars are considered sporty.Not all cars are safe at high speeds.? Sports cars are safe at high speeds.
A. Invalid B. Valid
Provide an appropriate response.Identify three common factors of 4x2 + 8x.
A. 4, x, 4x B. 4, 4x, 8x C. 4, x, x2 D. 4, 8, x
Find the rank of the matrix 
.
?
A. ?2 B. ?0 C. ?4 D. ?3 E. ?1