this task, i dunno where i am wrong

i have 1 task right now and dunno how to do it, can anyone help me pls, thak u
question
f(x)=cos((1+sinx)^0.5)
1. calculate f '(x)
2. plot antiderivertive of f(x)
3 calculate int(f(x), x=0..5)
4. find maximum value of f(x) on [0,5] and explain how do u know this is the maximum
5. find minimum value of f(x) on [0,5] and explain how do u know this is the minimum
6. compute the average value of f(x) on [0,5]
and this is my answer but when i put into mapple it didnt work so i am worried i got something wrong, need help to figure out, thk
this is my command but it not work, dunno why
1, diff(cos((1+sinx)^0.5))
2. plot(int(cos((1+sinx)^0.5))
this one it shown me that "Warning, unable to evaluate the function to numeric values in the region; see the plotting command's help page to ensure the calling sequence is correct"
3.int(cos((1+sinx)^0.5),x=0..5)
not work
4. maximum(cos((1+sinx)^0.5),x=0..5)
not work, it call error
5.minimum(cos((1+sinx)^0.5),x=0..5)
same with question 4
6. i dunno command to find average value
 
so that i cant finish this task up, anyone can help me please, thank yo very much

1,

1, diff(cos((1+sinx)^0.5))

with respect to ?? 

diff(cos((1+sin(x))^0.5),x)

2. plot(int(cos((1+sinx)^0.5))
this one it shown me that "Warning, unable to evaluate the function to numeric values in the region; see the plotting command's help page to ensure the calling sequence is correct"

again sinx  should be sin(x)  and you might want to specify the range x=a..b

3.int(cos((1+sinx)^0.5),x=0..5)

 

sinx  should be  sin(x)

not work
 

 

4. maximum(cos((1+sinx)^0.5),x=0..5)

 

sinx  should be  sin(x)

not work, it call error
5.minimum(cos((1+sinx)^0.5),x=0..5)

 

sinx  should be  sin(x)

same with question 4

some ideas

hi

i dont know if they are tasks for maple

but i think it's easier of you just do them without maple

 

 

Q4 and Q5   clearly you have to take the 1st and 2nd diravitive of the function

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