Hi, in the 2007 HSC question 7 a) i) says "show that sin x < x for x > 0"
The method I used I have seen many times before but not in this particular question, I said that for some u>0, cos u <= 1 using a graph and then integrated with borders 0 to x. Pretty simple.
The reason I am asking this is because the marking guidelines did not mention this method - I thought many more people would have done such a thing - so I am unsure whether my method is valid. I'm pretty sure it is but just making sure.
Thanks!
The method I used I have seen many times before but not in this particular question, I said that for some u>0, cos u <= 1 using a graph and then integrated with borders 0 to x. Pretty simple.
The reason I am asking this is because the marking guidelines did not mention this method - I thought many more people would have done such a thing - so I am unsure whether my method is valid. I'm pretty sure it is but just making sure.
Thanks!
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