Question

If the points ā+b,ā-b and ā+kb be collinear then k=?


(in question b means b bar) ​

Answer 1

Answer:

ɢɪᴠᴇɴ ᴠᴇᴄᴛᴏʀs

ᴘ

=ᴀ+ʙ

ǫ

=ᴀ−ʙ

ʀ

=ᴀ−ᴋʙ

ᴛʜᴇɴ ᴄᴏɴᴅɪᴛɪᴏɴ ғᴏʀ ᴄᴏʟɪɴᴇᴀʀ ᴠᴇᴄᴛᴏʀs

ᴘǫ

+

ǫʀ

=

ᴘʀ

ᴀ−ʙ−ᴀ−ʙ+ᴀ−ᴋʙ−ᴀ+ʙ=ᴀ−ᴋʙ−ᴀ−ʙ

ᴀ−ʙ−ᴀ−ʙ+ᴀ−ᴋʙ−ᴀ+ʙ=ᴀ−ᴋʙ−ᴀ−ʙ

−(+ᴋ)ʙ=−(+ᴋ)ʙ

ʜᴇʀᴇ ᴛʜᴇ

ʙ

ɪs ɴᴏᴛ ᴅᴇᴘᴇɴᴅ ᴏɴ ᴛʜᴇ ᴠᴀʟᴜᴇ ᴏғ ᴋ

sᴏ ᴋᴍᴀʏ ʙᴇ ʀᴇᴀʟ ɴᴜᴍʙᴇʀ

Step-by-step explanation:

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