Find all square roots of the number.49
A. 7, -7
B. 9, -9
C. 8, -8
D. 14, -14
Answer: A
Mathematics
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Find the gradient field F of the function f.f(x, y, z) = ln
+ z4
A. F = 
i + 
j + 
k
B. F = 
i + 
j + 
k
C. F = 
i + 
j + 
k
D. F = 
i + 
j + 
k
Mathematics
Solve.
+ 
= 1
A. {48}
B. 
C. {8}
D. {13}
Mathematics
Evaluate.(1 × 8) × 5
A. 13 B. 40 C. 45 D. 3
Mathematics
Find the quotient, and write in lowest terms, if necessary.- 
÷ 4
A. - 
B. - 
C. - 
D. None of these
Mathematics