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lower limit: 0 upper limit: pi

correct answer: 4 intervals: 1.8962, 8 intervals: 1.9742, 16 intervals: 1.9936

i cannot seem to get the correct answer, here is my attempt:

x values cosx + sinx values

0 1

1.042 0.998

2.0944 0.993

3.1415 0.9984

2(0.998 +0.993) + 1 + 0.9984 = 5.9966

h= b-a/n n=4, b-a = pi

h= 0.7853

h/2(5.9966) = 2.3548

this is for the 4 sub interval part of the question and is incorrect...... any help would be massively appreciated!!

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# Homework Help: Using the trapezium rule, evaluate the following definite integral, with 4,8 & 16 sub

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