# vector triple product

This follows from the preceding property and the commutative property of the dot product. j δ δ 2. \vec c)\vec b – (\vec b . k if The Vector Triple Product is a branch in vector algebra where we deal with the cross product of three vectors. r It gives a vector as a result. {\displaystyle {\vec {\mathbf {N} }}} DefinitionFormulaProofPropertiesSolved Examples. ε Example 3: If a⃗,b⃗,c⃗ \vec a, \vec b, \vec ca,b,c are coplanar then prove that a⃗×b⃗,b⃗×c⃗,c⃗×a⃗ \vec a \times \vec b, \vec b \times \vec c, \vec c \times \vec aa×b,b×c,c×a are also coplanar. × → and i This can be also regarded as a special case of the more general Laplace–de Rham operator This can be simplified by performing a contraction on the Levi-Civita symbols, will be summed out leaving only ) {\displaystyle l=j} = {\displaystyle i=l} We can write (a⃗×b⃗)×c⃗(\vec a \times \vec b) \times \vec c (a×b)×c as linear combination of vectors a⃗ and b⃗\vec a\ and\ \vec b a and b. r Example 5: If a×b=c,  b×c=a\mathbf{a}\times \mathbf{b}=\mathbf{c},\,\,\mathbf{b}\times \mathbf{c}=\mathbf{a}a×b=c,b×c=a and a, b, c be moduli of the vectors a, b, c respectively, then find the values of a and b. \vec c) \vec b(λb.c)a–(λa.c)b, It is valid for every value of a⃗,b⃗,c⃗ \vec a, \vec b, \vec ca,b,c because it is an identity, Put a⃗=i^,b⃗=j^,c⃗=i^ \vec a = \hat i , \vec b = \hat j, \vec c = \hat ia=i^,b=j^​,c=i^, => (i^×j^)×i^=(λj^.i^)i^–(λi^.i^)j^(\hat i \times \hat j) \times \hat i = (\lambda \hat j . 1 \hat i) \hat j(i^×j^​)×i^=(λj^​.i^)i^–(λi^.i^)j^​, => j^=–λj^\hat j = – \lambda \hat j j^​=–λj^​, Hence, (a⃗×b⃗)×c⃗=(a⃗.c⃗)b⃗–(b⃗.c⃗)a⃗(\vec a \times \vec b) \times \vec c = (\vec a . × → − S The unit normal vector {\displaystyle \delta _{ij}=1} {\displaystyle z} r k Since the cross product is anticommutative, this formula may also be written (up to permutation of the letters) as: From Lagrange's formula it follows that the vector triple product satisfies: which is the Jacobi identity for the cross product. {\displaystyle j=m} {\displaystyle \iint _{S}{\vec {\mathbf {F} }}\mathbf {\cdot } {\vec {\mathbf {N} }}\,dS} Unit vector coplanar with a⃗ and b⃗\vec a\ and\ \vec b a and b and perpendicular to c⃗\vec c c is ±(a⃗×b⃗)×c⃗∣(a⃗×b⃗)×c⃗∣\pm \frac{(\vec a \times \vec b)\times \vec c}{|(\vec a \times \vec b)\times \vec c|}±∣(a×b)×c∣(a×b)×c​. a⃗×(b⃗×c⃗)\vec a \times (\vec b \times \vec c)a×(b×c). u 0 across the parametrically-defined surface Now, a = b × c = b × (a × b) = (b . The scalar triple product (also called the mixed product, box product, or triple scalar product) is defined as the dot product of one of the vectors with the cross product of the other two. ) w → components of ε (c⃗.a⃗+y(c⃗.b⃗)x . v y = Example 6: Given the following simultaneous equations for vectors x and y. (\vec a \times \vec b) \times \vec c = \vec c . ( = c {\displaystyle \Delta =d\delta +\delta d} component of m a) b or a=b2a−(b . The vector triple product is defined as the cross product of one vector with the cross product of the other two. Instead a left contraction can be used, so the formula becomes. × Note that if a⃗,b⃗,c⃗\vec a, \vec b, \vec ca,b,c are non coplanar vector then a⃗×b⃗,b⃗×c⃗andc⃗×a⃗\vec a \times \vec b, \vec b \times \vec c\ and\ \vec c \tim… m ℓ 1. ⋅ d Chapter 1.1.3 Triple Products introduces the vector triple product as follows: (ii) Vector triple product: $\mathbf{A} \times (\mathbf{B} \times \mathbf{C})$. {\displaystyle j} Geometrically the trivector a ∧ b ∧ c corresponds to the parallelepiped spanned by a, b, and c, with bivectors a ∧ b, b ∧ c and a ∧ c matching the parallelogram faces of the parallelepiped. (xa⃗+yb⃗)\vec c . x) y = a × b, we get x = [a + (a × b)] / [a2] and y = a − x, CBSE Previous Year Question Papers Class 10, CBSE Previous Year Question Papers Class 12, NCERT Solutions Class 11 Business Studies, NCERT Solutions Class 12 Business Studies, NCERT Solutions Class 12 Accountancy Part 1, NCERT Solutions Class 12 Accountancy Part 2, NCERT Solutions For Class 6 Social Science, NCERT Solutions for Class 7 Social Science, NCERT Solutions for Class 8 Social Science, NCERT Solutions For Class 9 Social Science, NCERT Solutions For Class 9 Maths Chapter 1, NCERT Solutions For Class 9 Maths Chapter 2, NCERT Solutions For Class 9 Maths Chapter 3, NCERT Solutions For Class 9 Maths Chapter 4, NCERT Solutions For Class 9 Maths Chapter 5, NCERT Solutions For Class 9 Maths Chapter 6, NCERT Solutions For Class 9 Maths Chapter 7, NCERT Solutions For Class 9 Maths Chapter 8, NCERT Solutions For Class 9 Maths Chapter 9, NCERT Solutions For Class 9 Maths Chapter 10, NCERT Solutions For Class 9 Maths Chapter 11, NCERT Solutions For Class 9 Maths Chapter 12, NCERT Solutions For Class 9 Maths Chapter 13, NCERT Solutions For Class 9 Maths Chapter 14, NCERT Solutions For Class 9 Maths Chapter 15, NCERT Solutions for Class 9 Science Chapter 1, NCERT Solutions for Class 9 Science Chapter 2, NCERT Solutions for Class 9 Science Chapter 3, NCERT Solutions for Class 9 Science Chapter 4, NCERT Solutions for Class 9 Science Chapter 5, NCERT Solutions for Class 9 Science Chapter 6, NCERT Solutions for Class 9 Science Chapter 7, NCERT Solutions for Class 9 Science Chapter 8, NCERT Solutions for Class 9 Science Chapter 9, NCERT Solutions for Class 9 Science Chapter 10, NCERT Solutions for Class 9 Science Chapter 12, NCERT Solutions for Class 9 Science Chapter 11, NCERT Solutions for Class 9 Science Chapter 13, NCERT Solutions for Class 9 Science Chapter 14, NCERT Solutions for Class 9 Science Chapter 15, NCERT Solutions for Class 10 Social Science, NCERT Solutions for Class 10 Maths Chapter 1, NCERT Solutions for Class 10 Maths Chapter 2, NCERT Solutions for Class 10 Maths Chapter 3, NCERT Solutions for Class 10 Maths Chapter 4, NCERT Solutions for Class 10 Maths Chapter 5, NCERT Solutions for Class 10 Maths Chapter 6, NCERT Solutions for Class 10 Maths Chapter 7, NCERT Solutions for Class 10 Maths Chapter 8, NCERT Solutions for Class 10 Maths Chapter 9, NCERT Solutions for Class 10 Maths Chapter 10, NCERT Solutions for Class 10 Maths Chapter 11, NCERT Solutions for Class 10 Maths Chapter 12, NCERT Solutions for Class 10 Maths Chapter 13, NCERT Solutions for Class 10 Maths Chapter 14, NCERT Solutions for Class 10 Maths Chapter 15, NCERT Solutions for Class 10 Science Chapter 1, NCERT Solutions for Class 10 Science Chapter 2, NCERT Solutions for Class 10 Science Chapter 3, NCERT Solutions for Class 10 Science Chapter 4, NCERT Solutions for Class 10 Science Chapter 5, NCERT Solutions for Class 10 Science Chapter 6, NCERT Solutions for Class 10 Science Chapter 7, NCERT Solutions for Class 10 Science Chapter 8, NCERT Solutions for Class 10 Science Chapter 9, NCERT Solutions for Class 10 Science Chapter 10, NCERT Solutions for Class 10 Science Chapter 11, NCERT Solutions for Class 10 Science Chapter 12, NCERT Solutions for Class 10 Science Chapter 13, NCERT Solutions for Class 10 Science Chapter 14, NCERT Solutions for Class 10 Science Chapter 15, NCERT Solutions for Class 10 Science Chapter 16, JEE Main Chapter Wise Questions And Solutions.

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