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Mathematics

2 answers:

marysya [2.9K]3 years ago

6 0

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lakkis [162]3 years ago

5 0

Answer:

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Which of the following inverse functions are defined for x=-1/2? Select all that apply.

Aleksandr-060686 [28]

Answer:

A, B, E, and F

Step-by-step explanation:

sinx and cosx are defined for all values of x. So, sin⁻¹x and cos⁻¹x are also defined for all values of x.

A and E are correct.

tanx is defined for all values of x.

However, tan(nπ) = 0 at when n is an integer. So, tan⁻¹(±nx) is undefined. However, tan⁻¹(-½x) is defined, because -½ is not an integer.

B and F are correct.

C and D are <em>wrong</em>. Both sec⁻¹x and csc⁻¹x are undefined when -1 < x < 1, and -½ is in this forbidden region.

4 0

3 years ago

70 POINTS IF YOU CAN ANSWER THIS:

NNADVOKAT [17]

In any given week, salesman A earns $65 per sale, so his paycheck amounts to $p_A(s)=65s$ (where $0\le s\le20$ ).

Salesman B earns $40 per sale, with a weekly salary of $300, so in any given week this salesman earns $p_B(s)=45s+300$ .

Salesman C earns a flat rate of $900 per week regardless of the number of sales, so his weekly pay is $p_C(s)=900$ .