Solve the initial value problem.?
+ y = cos ?; ? > 0, y(?) = 1
A. y = 
, ? > 0
B. y = 
, ? > 0
C. y = 
, ? > 0
D. y = 
, ? > 0
Answer: D
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Provide an appropriate response.Consider the quartic function f(x) = ax4 + bx3 + cx2 + dx + e, a ? 0. Must this function have at least one critical point? Give reasons for your answer. (Hint: Must 
for some x?) How many local extreme values can f have?
What will be an ideal response?
Simplify.27.2 + 4.47 × (7.8 - 0.6)2
A. 261.1248 B. 258.9248 C. 503.7248 D. 257.5248
Perform the indicated operation. Assume that all variables are nonnegative.(9 - 6
)(6 - 2
)
A. 54 - 18
+ 12y
B. 54 + 54
+ 12y
C. 54 + 12y
D. 54 - 54
+ 12y
Referring to triangle ABC, find the area of the triangle.
?
?
Round to three significant digits.
?
A. 0.131 km2 B. 0.125 km2 C. 0.121 km2 D. 0.133 km2 E. 0.123 km2