Prove that the following arguments are valid or give an interpretation in which the argument is false.
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Prove that the following arguments are valid or give an interpretation in which the argument is false.
![[(x)ov (x) d] (xE) ← (x)Ò(xE) v (x)d(xA)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fd61d70a8-1828-415d-bba3-28735268e091%2F5d1a77db-eed4-4294-ba81-4349b8149943%2F49tjaq_processed.png&w=3840&q=75)
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- x) = (1/3)x - 61. Use forward and backward difference approximations of O(h) and a centered difference approximation of O(h) to estimate the first derivative of f(x)= NE 1+cos(2) at z=0.25 using a step size h = 0.125, Compute the percent relative true error for each approximation. (Note: Round off your approximations to 9 decimal places. Percentage errors must be rounded-off to 3 decimal places.) Interpret your results.Find n(B) if B = {x : x is a letter in the word “bookkeeper”}.