Find the unit tangent vector T and the principal unit normal vector N. r(t) = (10 + t)i + (4 + ln(sec t))j - 4k, -?/2 < t < ?/2
A. T = (cos t)i + (sin t)j; N = (- sin t)i + (cos t)j
B. T = (cos t)i - (sin t)j; N = (-sin t)i - (cos t)j
C. T = (-cos t)i - (sin t)j; N = (-cos t)i + (sin t)j
D. T = (-cos t)i - (sin t)j; N = (sin t)i - (cos t)j
Answer: A
You might also like to view...
The bar graph below shows the number of students by major in the College of Arts and Sciences. Answer the question.
What is the mean number of students taking History, English, and Science? Round your answer to the nearest whole student if necessary.
A. 213 students B. 950 students C. 283 students D. 350 students
Factor the trinomial completely. If the trinomial cannot be factored, say it is prime.5t5 - 15t4 - 50t3
A. (5t4 + 10)(t - 5) B. 5t3(t - 2)(t + 5) C. (t - 2)(5t4 + 25) D. 5t3(t + 2)(t - 5)
Provide an appropriate response.Explain how this statement needs to be changed so that it is true.log3
= log39 + log39
What will be an ideal response?
Divide.
A. 72x2 - 64x - 72 B. 9x3 - 8x2 - 9x C. 9x3 - 64x2 - 72x D. 9x2 - 8x - 9