Q. For the function f(x) given below, evaluatelimx→∞f(x) and limx→−∞f(x).f(x)=5sin(4x3)
Consider sine function behavior: To find the limit as x approaches infinity, we need to consider the behavior of the sine function. The sine function oscillates between −1 and 1, no matter how large x gets.
Behavior of 4x3: Since 4x3 will become very large as x approaches infinity, the argument of the sine function will also become very large. This means the sine function will keep oscillating.
Limit as x approaches infinity: Because the sine function oscillates and doesn't approach a single value, the limit of 5sin(4x3) as x approaches infinity does not exist.
Behavior as x approaches negative infinity: Similarly, as x approaches negative infinity, 4x3 will become very large in the negative direction, and the sine function will continue to oscillate between −1 and 1.
Conclusion: Therefore, the limit of 5sin(4x3) as x approaches negative infinity also does not exist.
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