Use Cramer's rule to solve the system of equations. If D = 0, use another method to determine the solution set. x + y + z = -3 x - y + 2z = 24x + y + z = 9
A. {(-3, -4, 4)}
B. {(4, -4, -3)}
C. {(-3, 4, -4)}
D. Cramer's rule does not apply since D = 0; ?
Answer: B
Mathematics
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Use reduction formulas to evaluate the integral.
A. - 
sin 2x cos3 2x + 
+ 
sin 4x + C
B. - 
sin 2x cos3 2x + 
+ 
sin 4x + C
C. - 
sin 2x cos3 2x + 
+ 
cos 4x + C
D. - 
sin 2x cos2 2x + 
+ 
sin 4x + C
Mathematics
Suppose u and v are differentiable functions of x. Use the given values of the functions and their derivatives to find the value of the indicated derivative.u(1) = 5, u '(1) = -7, v(1) = 6, v '(1) = -3.
at x = 1
A. 
B. 
C. - 
D. - 
Mathematics
Complete.5.69 T = 
lb
A. 0.02845 B. 11,380 C. 1,138 D. 0.002845
Mathematics
Simplify the rational expression.
A. 
B. y2 - 16
C. y2 + 4y + 16
D. 
Mathematics