Find the four second partial derivatives. Observe that the second mixed partials are equal.
?
?
A. 
B. 
C. 
D. 
E. 
Answer: C
Mathematics
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Find the length and direction (when defined) of u × v.u = - 
i + 
j + k, v = i + j + 2k
A. 2
; - 
i + 
j - 
k
B. 8; 
i - 
j - 
k
C. 2
; 
i + 
j - 
k
D. 8; 
i - 
j + 
k
Mathematics
Factor completely using the grouping method to factor trinomials. If unfactorable, indicate that the polynomial is prime.11x2 + 122x + 11
A. (11x - 1)(x - 11) B. (11x + 1)(x + 11) C. prime D. (11x + 11)(x + 1)
Mathematics
Use unit ratios or conversion factors to change to the units indicated. Round to the nearest tenth, if necessary.6.3 yd to meters
A. 5.7 m B. 248.0 m C. 160.0 m D. 48.0 m
Mathematics
Determine whether the given relationship represents a function.
A. Not a function B. Function
Mathematics