Limits algebraically

[Ramulala]

I'm stuck on a limits question

Enter each answer as a whole number (like -4, 0, or 253)

or as a decimal number (like 7.43 or -2.15)

or as DNE for Does Not Exist or undefined.

Use RADIAN mode for trig functions.

(Report your answer rounded to 2 decimal places.)


lim_(x->1) (x+3)/cos(x)
= 1+3/ cos(1) in raidian= 6.55

I got 6.55 as an answer. The computer shows that it is wrong.

 

[skeeter]

you calculated [MATH]1 + \frac{3}{\cos(1)}[/MATH]
the limit is [MATH]\frac{1+3}{\cos(1)}[/math]
calculators follow the order of operations

 

[Ramulala]

So that must be
7.40