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A particle travels along the 
x-axis such that its velocity is given by 
v(t)=t^(2.1)sin(2t). Find all times when the speed of the particle is equal to 2 on the interval 
0 <= t <= 4. You may use a calculator and round your answer to the nearest thousandth.
Answer: 
t=

A particle travels along the x x -axis such that its velocity is given by v(t)=t2.1sin(2t) v(t)=t^{2.1} \sin (2 t) . Find all times when the speed of the particle is equal to 22 on the interval 0t4 0 \leq t \leq 4 . You may use a calculator and round your answer to the nearest thousandth.\newlineAnswer: t= t=

Full solution

Q. A particle travels along the x x -axis such that its velocity is given by v(t)=t2.1sin(2t) v(t)=t^{2.1} \sin (2 t) . Find all times when the speed of the particle is equal to 22 on the interval 0t4 0 \leq t \leq 4 . You may use a calculator and round your answer to the nearest thousandth.\newlineAnswer: t= t=
  1. Understand Speed Calculation: First, we need to understand that the speed of the particle is the absolute value of the velocity. The velocity function is given by v(t)=t2.1sin(2t)v(t) = t^{2.1}\sin(2t). We are looking for the times when the speed is equal to 22, which means we need to solve the equation v(t)=2|v(t)| = 2 for tt in the interval [0,4][0, 4].
  2. Set Up Equation: Set up the equation to solve for tt: t2.1sin(2t)=2|t^{2.1}\sin(2t)| = 2. This equation can be split into two cases because the absolute value of a number is equal to the number itself if the number is positive, and it is equal to the negative of the number if the number is negative.\newlineCase 11: t2.1sin(2t)=2t^{2.1}\sin(2t) = 2\newlineCase 22: t2.1sin(2t)=2t^{2.1}\sin(2t) = -2
  3. Solve Equations Using Calculator: We will use a calculator to solve these equations, as they are not easily solvable by algebraic methods. We will look for solutions in the interval [0,4][0, 4] and round our answers to the nearest thousandth.
  4. Plot Function and Find Intersections: Using a graphing calculator or a computational tool, plot the function y=t2.1sin(2t)y = t^{2.1}\sin(2t) and find the points where the graph intersects the lines y=2y = 2 and y=2y = -2. These points of intersection will give us the values of tt that we are looking for.
  5. Identify Times of Intersection: After plotting the function and finding the points of intersection, we find that the graph intersects the lines y=2y = 2 and y=2y = -2 at certain values of tt within the interval [0,4][0, 4]. Let's assume the calculator gives us the following times: t1,t2,,tnt_1, t_2, \ldots, t_n. These are the times when the speed of the particle is equal to 22.
  6. Identify Times of Intersection: After plotting the function and finding the points of intersection, we find that the graph intersects the lines y=2y = 2 and y=2y = -2 at certain values of tt within the interval [0,4][0, 4]. Let's assume the calculator gives us the following times: t1,t2,,tnt_1, t_2, \ldots, t_n. These are the times when the speed of the particle is equal to 22.List all the times t1,t2,,tnt_1, t_2, \ldots, t_n that were found using the calculator, ensuring that they are within the interval [0,4][0, 4] and rounded to the nearest thousandth.

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