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# C4 parallel vectors watch

1. NO.5d and NO. 6b Exercise 5B. https://www.biochemtuition.com/wp-co...C4-Vectors.pdf

For No.5 i said CD = 2OE and used CD = CO + OD, and that didn't work.

For No. 6 i tried to found BD using BD = BE + ED, AND THAT didn't work, why?
2. (Original post by Paranoid_Glitch)
NO.5d and NO. 6b Exercise 5B. https://www.biochemtuition.com/wp-co...C4-Vectors.pdf

For No.5 i said CD = 2OE and used CD = CO + OD, and that didn't work.

For No. 6 i tried to found BD using BD = BE + ED, AND THAT didn't work, why?
Could you be more specific about what questions you are referring to? That link contains the whole chapter of vectors and thus a lot of questions. Perhaps you could screenshot the relevant questions?
3. (Original post by Paranoid_Glitch)
NO.5d and NO. 6b Exercise 5B. https://www.biochemtuition.com/wp-co...C4-Vectors.pdf

For No.5 i said CD = 2OE and used CD = CO + OD, and that didn't work.
For this one, notice that CD = OD - OC - you know what these are in terms of a, b, lambda and mu. Then notice that CE = (1/2) CD = CD. The fact that CE = CD will then give you two equations in lambda and mu which you can solve.

Also note that CD != 2OE
4. (Original post by Paranoid_Glitch)
For No. 6 i tried to found BD using BD = BE + ED, AND THAT didn't work, why?
For this part, your technique should work. So, first of all write it in terms of things we've been given or have worked out:

BD = BE + ED = - EB - DE

Then substitute in the RHS for EB and DC. The work out what the LHS is in terms of b.

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