Write the expression in the standard form a + bi.
A. -1 + 2i
B. -1 - 2i
C. 1 + 2i
D. -1 + 5i
Answer: A
Mathematics
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Find the unit tangent vector of the given curve.r(t) = 
(1 + t)3/2i + 
(1 - t)3/2j + 
tk
A. T(t) = 
i + 
j + 
k
B. T(t) = 
i - 
j + 
k
C. T(t) = 
i - 
j + 
k
D. T(t) = 
i - 
j + 
k
Mathematics
Solve the problem.Find the equation that satisfies the following conditions:
= 4 + 
, y(1) = 15
A. y = 4x + ln 
+ 10
B. y = ln 
+ 15
C. y = x + ln 
+ 14
D. y = 4x + ln 
+ 11
Mathematics
Construct the indicated rotation.A 180° rotation of the polygon about point A
What will be an ideal response?
Mathematics
Write the complex number in polar form. Express the argument ? in degrees, with 0 ? ? ? 360°.-2
+ 2i
A. 4(cos 45° + i sin 45°) B. 4(cos(-135°) + i sin(-135°)) C. 4(cos(-45°) + i sin(-45°)) D. 4(cos 135° + i sin 135°)
Mathematics