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# integration watch

1. x4+3x2+2

When you integrate this, wouldn't you get: x^5/5 + x^3/3 + 2x?
According to the mark scheme the bit in red is supposed to be 3x^3/3. Does anyone know why that is, because I have no idea. Thanks.

2. (Original post by u.sha)
x4+3x2+2

When you integrate this, wouldn't you get: x^5/5 + x^3/3 + 2x?
According to the mark scheme the bit in red is supposed to be 3x^3/3. Does anyone know why that is, because I have no idea. Thanks.

Hence,

3. (Original post by u.sha)
x4+3x2+2

When you integrate this, wouldn't you get: x^5/5 + x^3/3 + 2x?
According to the mark scheme the bit in red is supposed to be 3x^3/3. Does anyone know why that is, because I have no idea. Thanks.
For integrating 3x^2
add one to the power and divide by the new power.

so 3x^3 /3

(you just forgot to include the coefficient of x squared)
4. (Original post by u.sha)
x4+3x2+2

When you integrate this, wouldn't you get: x^5/5 + x^3/3 + 2x?
According to the mark scheme the bit in red is supposed to be 3x^3/3. Does anyone know why that is, because I have no idea. Thanks.
Add one more, drop it though the trapdoor.

And don't forget the constant of integration.
5. (Original post by SherlockHolmes)

Hence,

(Original post by bobwibbles)
For integrating 3x^2
add one to the power and divide by the new power.

so 3x^3 /3

(you just forgot to include the coefficient of x squared)
(Original post by Mr M)
Add one more, drop it though the trapdoor.

And don't forget the constant of integration.
ohhhhh i see where i went wrong. oh myyy
whoops
thanks!!

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