Verify that the indicated function is an explicit solution of the given differential equation. Assume an appropriate interval i of definition for each solution. Y'' − 4y' 20y = 0; y = e2x cos 4x.

-3.396 = -3.4

-0.708 = -0.7

0.304 = 0.3

0.955 = 1

answer: 20

step-by-step explanation:

6 hours 48 min

step-by-step explanation:

68÷5=13.6

13.6×30=408min=6 hours 48 min.

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the formula for the equation of a circle is (x – h)2+ (y – k)2 = r2, where (h, k) represents the coordinates of the center of the circle, and r represents the radius of the circle. if a circle is tangent to the x-axis at (3,0), this means it touches the x-axis at that point.