Let L 1 and L 2 be the lines whose parametric equations are L 1 : x = 4 t , y = 1 − 2 t , z = 2 + 2 t L 2 : x = 1 + t , y = 1 − t , z = − 1 + 4 t (a) Show that L 1 and L 2 intersect at the point (2,0, 3). (b) Find, to the nearest degree, the acute angle between L 1 and L 2 at their intersection. (c) Find parametric equations for the line that is perpendicular to L 1 and L 2 and passes through their point of intersection.
Let L 1 and L 2 be the lines whose parametric equations are L 1 : x = 4 t , y = 1 − 2 t , z = 2 + 2 t L 2 : x = 1 + t , y = 1 − t , z = − 1 + 4 t (a) Show that L 1 and L 2 intersect at the point (2,0, 3). (b) Find, to the nearest degree, the acute angle between L 1 and L 2 at their intersection. (c) Find parametric equations for the line that is perpendicular to L 1 and L 2 and passes through their point of intersection.
In the xy-plane, the graphs of the linear
function and the exponential function E
both pass through the points (0,2) and (1,6)
The function f is given by
f(x) = L(x) - E(x). What is the maximum
value of f?
A
0.007
B
0.172
C
0.540
D 1.002
n
3
5
ст
7
ап
85
95
105
The table gives values of an arithmetic
sequence an for selected values of n. Which
of the following linear functions is
αρ
constructed from the initial value an (with
n = 0) and common difference of the
sequence?
A
f(x) = 70+5x
B
f(x) = 70+10x
C
f(x) = 75+5x
D
f(x) = 75+10x
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Calculate the integral approximation Se for
So
dz.
L-de
4
1.
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