Write the expression in the form a + bi.
A. - 
- 
i
B. 
i
C. - 
D. - 
+ 
i
Answer: D
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Find the gradient field F of the function f.f(x, y, z) = z sin (x + y + z)
A. F = -cos xi - cos yj + (sin z - z cos z)k B. F = -z cos(x + y + z)i - z cos(x + y +z)j + (sin(x + y + z) - zcos(x + y + z))k C. F = cos xi + cos yj + (sin z + z cos z)k D. F = z cos(x + y + z)i + z cos(x + y +z)j + (sin(x + y + z) + zcos(x + y + z))k
Evaluate the function requested. Write your answer as a fraction in lowest terms.
Find tan A.
A. tan A = 
B. tan A = 
C. tan A = 
D. tan A = 
Perform the indicated operation and simplify. 
+ 
A. 
B. 3
C. 
D. 
State the phrase as a mathematical expression. Use x to represent the variable.The difference between three times a number and eleven
A. 3x - 11 B. 3 - x + 11 C. 11 - 3x D. 11 + 3x