Answer:
biotbhuvb2tupbpu2
Step-by-step explanation:
Answer:
B is all about addition and multiplication
(2x^2/(1-x^2)) + 3^(1/x) for the first half you can simply divide all terms by the highest power of x to get:
2/(1/x^2-1) as x approaches infinity you have 2/-1=-2
For the second part the exponent approaches zero as x approaches infinity and anything raised to the zero power is equal to 1 so you have:
-2+1=-1
So the limit as x approaches infinity is -1.
Your calculator might not be able to perform a "secant" function, but that's because it's easy to convert.
On top of your three basic trig functions (sine, cosine, and tangent) there are three more which act as their reciprocals. (cosecant, secant, and cotangent, respectively)
As review: A reciprocal is when you flip a fraction. For instance, the reciprocal of 2/3 is 3/2. If you have some number that's not a fraction like 5, you can put it as a fraction 5/1 and then get the reciprocal 1/5.
sec(85°) is the reciprocal of cos(85°)
sec(85°) = 1/cos(85°) = 1/0.0871557427 = 11.4737133 <em>(round as needed)</em>
