Write the expression in the standard form a + bi.i6 + i4 + i2 + 1
A. 0
B. -1
C. i
D. 1
Answer: A
Mathematics
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Find the domain and range and describe the level curves for the function f(x,y).f(x, y) = 
A. Domain: all points in the xy-plane; range: all real numbers; level curves: parabolas 
B. Domain: all points in the xy-plane excluding x = 0; range: real numbers z ? 0; level curves: parabolas 
C. Domain: all points in the xy-plane; range: real numbers z ? 0; level curves: parabolas 
D. Domain: all points in the xy-plane excluding x = 0; range: all real numbers; level curves: parabolas 
Mathematics
Use a calculator to find the function value.sin 66°45'
A. 0.9188 B. 0.3947 C. 2.3276 D. -0.0266
Mathematics
Decide whether the statement is true or false.{12, 20, 32, 52} ? {2, 4, 6, 8, ..., 98}
A. False B. True
Mathematics
Graph the equation.y = ?-8 - x?
A. 
B. 
C. 
D. 
Mathematics