Year 12s: what will be the first way you research your future options? >>

Integration

Hi, my problem with this question is that my answer for part c is 12.8 g (1 d.p) which can't be right. I've checked through my working several times and can't see the error.

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Reply 1

Jassy16

post the same thing here you'll get help pretty quick

http://www.thestudentroom.co.uk/showthread.php?t=3470381

Reply 2

the bear

Original post by pineneedles

Hi, my problem with this question is that my answer for part c is 12.8 g (1 d.p) which can't be right. I've checked through my working several times and can't see the error.

you missed out the negative in front of k.... at the end

Reply 3

pineneedles

Original post by the bear

you missed out the negative in front of k.... at the end

It might be the quality of the picture, but I've definitely put negatives in front of every k, and that's was I put into my calculator.

Posted from TSR Mobile

Reply 4

the bear

Original post by pineneedles

It might be the quality of the picture, but I've definitely put negatives in front of every k, and that's was I put into my calculator.

Posted from TSR Mobile

i mean when you put your value of k in the exponent you did not put the original negative sign back in