6-7. Given vectors U = -41 +12, V=51-2), W =-31 - 1 6. Find a) 3U - 5V._b) 2V - WI 7. a) UW What can you tell from the result? b) angle between U and V (keep one digit after decimal. calculator ok)
6-7. Given vectors U = -41 +12). V = 5i - 21,W=-31 - 1 6. Find a) 30 - 5.b) |2V - WI 7. a) U. W What can you tell from the result? b) angle between U and keep one digit after decimal, calculator ok) 8. a) Write the complex number -2 -21 in trigonometry form. Be sure to graph when looking for O. (No decimal answer) b) use the result from a) and De Moivre's theorem the find...
Given vectors A = 3i -2j +k and B = 4i + 2j - 5k, find the angle between them. A car slows down from a speed of 60 mph to rest in 10 s, How far did it travel in that time?
if v=-4i+2j and w=2i-3j then find a= v+w b=b-w c=3v d=2v+2w 7. If v =-4i+ 2j and w = 2i - 3j. Then find (Section 7.6) a. vw b. v -w C. 3v d. 2v2w
7. Consider the vectors v = 3i - 5j, and u = -41 - 2j. Determine whether these vectors are orthogonal. If not orthogonal, determine the angle they form, to the nearest tenth of a degree.
2. Given the vectors u = 2i + 3j and v = -3i - 2j (a) (4 points) Plot and label each vector (b) (4 points) Find w = u + v (c) (4 points) Find the unit vector of w
4. [-12 Points) DETAILS SCALCET8 12.3.011. If u is a unit vector, find u v and u. w. (Assume v and w are also unit vectors.) u u v = Uw= 5. [-12 Points] DETAILS SCALCET8 12.3.015. Find the angle between the vectors. (First find an exact expression and then approximate to the nearest degree.) a = (7,2), b = (3,-1) exact approximate 6. [-/2 points) DETAILS SCALCET8 12.3.019. Find the angle between the vectors. (First find an exact expression...
Directions: In 25-27, let u = 15-6i .V=-5+ 4i, and w=-2-i. [25] Simplify u + 3v: A) -6i B) 6i C) 30-6i D) 30+6i E) none of these [26] Find the sum of the conjugate of v and the conjugate of w. A)-7-31 B) -7 +31 C) 7-3i D) 7+3i E) none of these [27] Subtract w from u. A) -17-71 B) -17+5i c) 13-5i D) 13-71 E) none of these
finall answers Consider the following. u = (-6, 6), v = (1, -1) (a) Find u. v. u. V (b) Find the angle between u and v to the nearest degree. Submit Answer 3. -/2 POINTS SPRECALC7 9.2.010.MI. 0/2 Submissions Used Consider the following. u = 4i + j, v = 5i - 2j (a) Find u. v. u.v= (b) Find the angle between u and v to the nearest degree. A = Submit Assign Type here to search
3. Consider two vectors u = 2i -j +2k and v=3i+2j-k. (a) Find a vector orthogonal to a and b. _ [3 marks] (b) Show that the vector from (a) is orthogonal to a and b. [1 mark]