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Question Number 81498 by jagoll last updated on 13/Feb/20

$$\mathrm{what}\mathrm{the}\mathrm{formula}$$$$\overline{\mathrm{a}}\times \left(\overline{\mathrm{b}}\times \overline{\mathrm{c}}\right)?$$

Answered by TANMAY PANACEA last updated on 13/Feb/20

$$(\overrightarrow{a}.\overrightarrow{c})\overrightarrow{b}-(\overrightarrow{a}.\overrightarrow{b})\overrightarrow{c}$$$$Tanmay$$

Commented by jagoll last updated on 13/Feb/20

$$\mathrm{thank}\mathrm{you}\mathrm{mister}$$

Commented by jagoll last updated on 13/Feb/20

$${\mathrm{i}}^{\prime }\mathrm{m}\mathrm{forgot}\mathrm{this}\mathrm{formula}$$

Commented by mr W last updated on 13/Feb/20

$$and\left(\mathit{a}\times \mathit{b}\right)\times \mathit{c}=?$$

Commented by TANMAY PANACEA last updated on 13/Feb/20

$$-\overrightarrow{c}\times \left(\overrightarrow{a}\times \overrightarrow{b}\right)$$$$=(-\overrightarrow{c}.\overrightarrow{b})\overrightarrow{a}-(-\overrightarrow{c}.\overrightarrow{a})\overrightarrow{b}$$$$=-(\overrightarrow{c}.\overrightarrow{b})\overrightarrow{a}+(\overrightarrow{c}.\overrightarrow{a})\overrightarrow{b}$$$$=(\overrightarrow{c}.\overrightarrow{a})\overrightarrow{b}-(\overrightarrow{c}.\overrightarrow{b})\overrightarrow{a}$$$$plscheck$$

Commented by mr W last updated on 13/Feb/20

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Commented by TANMAY PANACEA last updated on 13/Feb/20

$$thankyousir$$

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