Question

Find the value of the trigonometric function x^2-1/x^+1' where x>1

Answer 1

Answer: I tried to solve it but my device is completely broken!

Step-by-step explanation: To find the value of the expression when

x

=

−

3

substitute

−

3

for each occurrence of

x

in the expression and then calculate the result:

x

2

−

1

x

+

1

becomes:

(

−

3

)

2

−

1

−

3

+

1

⇒

9

−

1

−

2

⇒

8

−

2

⇒

−

4