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A ball is thrown up into air from the ground and the ball's velocity is modeled by the equation v(t)=14x24cos(πx)+8v(t)=-\frac{1}{4}x^{2}-4\cos(\pi x)+8. \newlineAt what tt value does the ball reach its maximum?

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Q. A ball is thrown up into air from the ground and the ball's velocity is modeled by the equation v(t)=14x24cos(πx)+8v(t)=-\frac{1}{4}x^{2}-4\cos(\pi x)+8. \newlineAt what tt value does the ball reach its maximum?
  1. Identify Velocity Equation: Identify the given velocity equation for the ball.\newlineThe given velocity equation is v(t)=(14)x24cos(πx)+8v(t) = -(\frac{1}{4})x^2 - 4\cos(\pi x) + 8.\newlineWe need to find the value of tt at which the velocity is zero, as this will be the point where the ball changes direction and starts to fall back down, indicating the maximum height.
  2. Set Equation Equal to Zero: Set the velocity equation equal to zero to find the critical points.\newline0=(14)x24cos(πx)+80 = -(\frac{1}{4})x^2 - 4\cos(\pi x) + 8\newlineThis is a transcendental equation because it involves both polynomial and trigonometric terms. We will need to use numerical methods or graphing techniques to solve for xx.
  3. Use Graphing Calculator: Use a graphing calculator or software to plot the velocity equation and find the tt value where the velocity is zero.\newlineSince the equation is transcendental, we cannot solve it algebraically for an exact solution. Instead, we will approximate the solution using a graphing tool.
  4. Observe Graph for Maximum Height: Observe the graph to determine the tt value where the velocity crosses the tt-axis, which indicates the maximum height.\newlineBy graphing the function, we can see that the velocity crosses the tt-axis at approximately t=2t = 2 seconds. This is the point where the ball reaches its maximum height.

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