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 MULTIPLE CHOICE TEST SOURCES OF ERROR INTRO TO SCIENTIFIC COMPUTING

Pick the most appropriate answer.

Q1. Truncation error is caused by approximating

irrational numbers

fractions

rational numbers

exact mathematical procedures

Q2. A computer that represents only 4 significant digits with chopping would calculate 66.666*33.333 as

2220

2221
2221.17778
2222

Q3. A computer that represents only 4 significant digits with rounding would calculate 66.666*33.333 as

2220
2221
2221.17778
2222

Q4. The truncation error in calculating f'(2) for f(x)=x2 by

with h=0.2 is

-0.20

0.20

4.0

4.2

Q5. The truncation error in finding  using LRAM (left end point Riemann approximation) with equally portioned points  -3<0<3<6<9 is

648
756
972
1620

Q6. The number 1/10 is registered in a fixed 6 bit-register with all bits used for the fractional part.  The difference gets accumulated every 1/10th of a second for one day.  The magnitude of the accumulated difference is

0.082
135
270
5400

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