Provide an appropriate response.
Explain why whole number exponents of i have values that repeat in cycles of four. It may be helpful to break down i5 as i5 = i4 ? i (as well as i6 = i4 ? i2, i7 = i4 ? i3, i8 = i4 ? i4, etc.) to explain the cycle.
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Mathematics
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Determine if the given function y = f(x) is a solution of the accompanying differential equation.y = 
dtx2y' + xy = 
e4x
A. Yes B. No
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Multiply or divide.-42 ÷ 7
A. -6 B. -5 C. -7 D. 6
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Let v and w be two vectors in the plane with given magnitudes. The angle between v and w is ?. Find the expression. Round the answer to the nearest tenth.
= 11, 
= 9, ? = 70°
Find 
A. 24.1 B. 21.1 C. 17.6 D. -106.4
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Add or subtract. Simplify the answer.8 - 
A. 
B. 
C. 
D. 
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