Graphing equation in Mathematica help

[abe_cooldude]

Hi, I am trying to graph

(x+(1/√(1+cos(x)²)))

in mathematica, and i used

Plot[x + (1/(sqrt (1 + cos (x)^2))), {x, 0, 9}]

but I am not getting an output graph.

Any ideas?!

Plot[x + 1/Sqrt[1 + Cos x^2], {x, 0, 9}, PlotRange -> {-10, 10}]

I found few errors, and above is what I got, it's a progress, but now I get this error:

Plot::exclul: {Im[Cos x^2]-0} must be a list of equalities or \
real-valued functions.

 

[Dale]

Plot[x + 1/Sqrt[1 + Cos[x]^2 ], {x, 0, 9}]

Function arguments always use square brackets as in f[x]

 

[oswaler]

Hi there, it seems like you are on the right track with your Mathematica code. However, there are a few errors that need to be addressed in order to get a proper graph output.

Firstly, in the equation you provided, there is a missing parenthesis after the square root sign. It should be written as 1/(sqrt(1+cos(x)^2)), with a closing parenthesis after the 2.

Secondly, you have used a lowercase "s" in "sqrt" instead of a capital "S". In Mathematica, the square root function is written as Sqrt, so your code should be Plot[x + 1/Sqrt[1 + Cos x^2], {x, 0, 9}].

Lastly, the PlotRange option is missing from your code. This specifies the range of values on the y-axis for the graph. In this case, it would be helpful to set the range to {-10, 10} to ensure that the graph is properly displayed.

Taking all of these corrections into account, your code should look like:

Plot[x + 1/Sqrt[1 + Cos x^2], {x, 0, 9}, PlotRange -> {-10, 10}]

I hope this helps and you are able to get your desired graph output. Keep exploring and experimenting with Mathematica - it is a powerful tool for graphing and analyzing equations. Good luck!