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Which of the following functions grows the fastest?A.๐‘“(๐‘ก)=2๐‘กโˆ’๐‘ก3f(t)=2 t โˆ’t 3 B.๐‘‘(๐‘ก)=(1.1)๐‘กd(t)=(1.1) t C.๐‘(๐‘ก)=๐‘ก4โˆ’3๐‘ก+9b(t)=t 4 โˆ’3t+9D.โ„Ž(๐‘ก)=5๐‘ก+๐‘ก5h(t)=5 t +t 5 E.๐‘(๐‘ก)=๐‘ก2โˆ’5๐‘กc(t)= t 2 โˆ’5tโ€‹

Question

Which of the following functions grows the fastest?A.๐‘“(๐‘ก)=2๐‘กโˆ’๐‘ก3f(t)=2 t โˆ’t 3 B.๐‘‘(๐‘ก)=(1.1)๐‘กd(t)=(1.1) t C.๐‘(๐‘ก)=๐‘ก4โˆ’3๐‘ก+9b(t)=t 4 โˆ’3t+9D.โ„Ž(๐‘ก)=5๐‘ก+๐‘ก5h(t)=5 t +t 5 E.๐‘(๐‘ก)=๐‘ก2โˆ’5๐‘กc(t)= t 2 โˆ’5tโ€‹

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Solution

To determine which function grows the fastest, we need to look at the highest degree of the polynomial in each function. The degree of a polynomial is the highest power of the variable (in this case, t).

A. ๐‘“(๐‘ก)=2๐‘กโˆ’๐‘ก^3: The highest degree is 3. B. ๐‘‘(๐‘ก)=(1.1)๐‘ก: This is an exponential function, which grows faster than any polynomial function. C. ๐‘(๐‘ก)=๐‘ก^4โˆ’3๐‘ก+9: The highest degree is 4. D. โ„Ž(๐‘ก)=5๐‘ก+๐‘ก^5: The highest degree is 5. E. ๐‘(๐‘ก)=๐‘ก^2โˆ’5๐‘ก: The highest degree is 2.

So, the function that grows the fastest is B. ๐‘‘(๐‘ก)=(1.1)๐‘ก, the exponential function.

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A.๐‘“(๐‘ก)=2๐‘กโˆ’๐‘ก3f(t)=2 t โˆ’t 3 B.๐‘‘(๐‘ก)=(1.1)๐‘กd(t)=(1.1) t C.๐‘(๐‘ก)=๐‘ก4โˆ’3๐‘ก+9b(t)=t 4 โˆ’3t+9D.โ„Ž(๐‘ก)=5๐‘ก+๐‘ก5h(t)=5 t +t 5 E.๐‘(๐‘ก)=๐‘ก2โˆ’5๐‘กc(t)= t 2 โˆ’5tโ€‹

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