Find the area between line y = x + 1 and the x-axis from x = -2 to x = 0.
5 square units
4 square units
2 square units
1 square unit
Correct answer is C
∫0−2x+1 x2+x|0−2
0 - (22−2)
= 2 square units
Find correct to the nearest degree,5 the angle between p = 12i - 5j and q = 4i +3j
59o
60o
75o
76o
Correct answer is A
Cos θ = 4(12)+(−5)(3)√122+(−5)2√42+32
Cosθ = 48−15(√189)(√25)
θ=cos−1 (3361.28)
θ = cos−10.5367
θ = 59o
Which of the following vectors is perpendicular to (−13)?
(−31)
(13)
(1−3)
(13)
Correct answer is A
No explanation has been provided for this answer.
−15(5−x)4
−3(5−x)4
3(5−x)4
15(5−x)4
Correct answer is C
y = (5 - x)−3
dydx = -3(5 - x)−4
= −3(5−x)4