Find the domain of the variable in the equation. Write the answer in interval notation.
= x + 12
A. (-?, -2) ? (4, ?)
B. (-?, -2) ? (-2, 4) ? (4, ?)
C. (-2, 4) ? (4, ?)
D. (-?, 2) ? (2, 4) ? (4, ?)
Answer: D
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Find the gradient field F of the function f.f(x, y, z) = x3e8x + y4z8
A. F = (1 + x)x2e8xi + y3z8j + y4z7k B. F = (3 + 8x)x2e8xi + 4y3j + 8z7k C. F = (3 + 8x)x2e8xi + (x3e8x + 4y3z8)j + (x3e8x + 8y4z7)k D. F = (3 + 8x)x2e8xi + 4y3z8j + 8y4z7k
Find the general term of the arithmetic sequence then find the indicated term of the sequence. Assume that the domain of the sequence is all natural numbers.Find an and a21.
A. an = n + 3; a21 = 24 B. an = n + 2; a21 = 23 C. an = 4 - n; a21 = -17 D. an = n - 4; a21 = 17
Write an expression in symbol for word phase. Let n be the input. To find a difference or quotient, write the numbers in the order in which they are stated. The product of five and the input
B) 5
C) 7n
D) 5n
E) 6n
Verify the identity.sin ?[sin ? + sin(5?)] = cos(2?)[cos(2?) - cos(4?)]
What will be an ideal response?