Answer:
c
Step-by-step explanation:
just substitute a big number into x like 10^6 as it approaches
and a big negative number like -10^6 as it approaches
Cut it in half (the top into a trapezoid and the bottom into another trapdoors then solve both and add them
Answer:
30
Step-by-step explanation:
For a = <xa, ya> and b = <xb, yb>, the dot product is the sum of products ...
a·b = (xa)(xb) + (ya)(yb)
Substituting the given information, you have ...
a·b = 5·4 + 2·5 = 20 + 10
a·b = 30
_____
Some graphing calculators can do such math. There are also dot product calculators available on the Internet. If you have quite a few of these to calculate, you can put the appropriate formula into a spreadsheet.
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