Podcast Beta
Questions and Answers
The function f1= {(1, 5), (2, 7), (3, 8), (4, 6)} is an example of a _______ function.
False
In the function f1= {(1, 5), (2, 7), (3, 8), (4, 6)}, the set of second entries of the ordered pairs is the set ________.
False
The cosine function can be restricted to any interval of the type ________, for its inverse to exist.
False
The general form of the intervals for which we can define the inverse of the cosine function is (nπ, (n+1) π)?
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A square matrix A is called an orthogonal matrix if AAT = ATA = I?
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If A = [cos x sin x; -sin x cos x], then the value of k in A (adj A) = k [1 5; 0 0] is 5?
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If A = [2 -3; -5 2], then adj(4A^2 + 9A) is equal to: [63 94; 73 105]?
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If f: R → R and f(x) = x, then f o f = x?
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If f(x) = |x – 2|, then at x = 2, f'(x) is Continuous but not differentiable?
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The second derivative of ex cos x is -2ex sinx?
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The maximum number of different elements needed to write a skew symmetric matrix of order n is n^2 – n + 1?
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A square matrix A is called an orthogonal matrix if AI = A?
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The maximum number of different elements needed to write a skew symmetric matrix of order n is n^2?
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