A store is having a sale on walnuts and chocolate chips. For 9 pounds of walnuts and 7 pounds of chocolate chips, the total cost
is $42. For 3 pounds of walnuts
and 5 pounds of chocolate chips, the total cost is $24. Find the cost for each pound of walnuts and each pound of chocolate chips.
and 5 pounds of chocolate chips, the total cost is $24. Find the cost for each pound of walnuts and each pound of chocolate chips.
1 answer:
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Here we get the statement:
"sec^-1(0.5) is undefined"
And we want to see if this is true or false, so let's use the properties that we know to find that this is false.
Remember that the sec function is defined as:
Then we will have:
Then is really trivial to see that:
Then we can conclude that the function is not undefined at 0.5, so the statement is false.
Below you can see the graph of the given function, and you will see that it is never undefined.
If you want to learn more, you can read:
