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# reverse chain rule watch

1. im trying to find the reverse chain rule of 4 - (1+2x)^6

i integrated 4 and i got 4x

but the - sign is confusing me is it multiplying (1+2x)^6 by -1 or ....
2. (Original post by man111111)
im trying to find the reverse chain rule of 4 - (1+2x)^6

i integrated 4 and i got 4x

but the - sign is confusing me is it multiplying (1+2x)^6 by -1 or ....
So just ignore the minus sign since it's completely outside of your expression to the integrated.

Just integrate first then add a minus in front after it.

is the same as
3. (Original post by RDKGames)
So just ignore the minus sign since it's completely outside of your expression to the integrated.

Just integrate first then add a minus in front after it.

is the same as
so can i write my answer as 4x + (-1/14(1+2x)^7)
4. (Original post by man111111)
so can i write my answer as 4x + (-1/14(1+2x)^7)
Yes, though it's a bit pointless so may as well just say
5. (Original post by RDKGames)
Yes, though it's a bit pointless so may as well just say
6. (Original post by RDKGames)
Yes, though it's a bit pointless so may as well just say
can i write ∫ 4 - (1+2x)^6 as ∫ 4 - ∫ (1+2x)^6
7. (Original post by man111111)
can i write ∫ 4 - (1+2x)^6 as ∫ 4 - ∫ (1+2x)^6
Yes. This property should be known from C1.

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