Tzu En's answer to Tiara's Secondary 4 A Maths Singapore question.
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v = 20e⁵ᵗ + 5
From the equation, we can see that as t increases, 5t increases and hence e⁵ᵗ increases exponentially. This means that it is accelerating and dv/dt which is the gradient of v-t graph is positive, further concluding that its speed increases from P to Q.
From the equation, we can see that as t increases, 5t increases and hence e⁵ᵗ increases exponentially. This means that it is accelerating and dv/dt which is the gradient of v-t graph is positive, further concluding that its speed increases from P to Q.
Date Posted:
2 years ago
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