Zadanie 11a
Find a vector equation for the axis through V and the centre of C.
- Materiał graficzny
Represent lines in vector, parametric or Cartesian form and interpret direction vectors in geometry or motion.
Tę umiejętność sprawdza 20 zadań wzorowanych na arkuszach IB z lat 2022–2026.
Find a vector equation for the axis through V and the centre of C.
The base plane Π is 4x − y + 7z = 18. State a vector equation for its perpendicular L₁ through K.
Now b=2. Line L₂ passes through A with direction (2,1,−1). Find its intersection N with Π.
Find a vector equation for the reflection of L₁ in Π.
Give a vector equation for L1.
Find the horizontal flight speed.
Find the angle made by the descending flight path with the horizontal, in degrees.
A line through E perpendicular to P1 meets P2 : 2x + y + z = 4 at F. Find F.
Write a vector equation of L₁.
Write a vector equation of L₂.
N is the point of L₂ nearest to P. Find its coordinates.
Give a vector equation of L₃.
Use the parameter convention . Find γ at S.
Suppose k=2, p=−3/2 and q=75/2. The normal line to Π₁ through A meets Π₂ at B. (i) Find B. (ii) Show that the distance between the planes is .
Write the equation of L as r=a+λb, λ∈R.
A line M is parallel to Π, passes through (2,1,3), and intersects the z-axis. Find a vector equation of M.
Show that L and M intersect and find the intersection A.
Show that L and M intersect and find the intersection A.
(i) Find P. (ii) Find the elapsed time between the two vehicles reaching P.
For k=8, L₁ passes through A,B,C. (i) Give a vector equation of L₁. (ii) L₂ is given by x = (y − 1)/2 = 2 − z. Show that L₁ and L₂ are skew.
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