@Carl Love 

after we did that how did we put it in this form

just substract them

y(x+h)-y(x-h):  % = series(%, h=0, 3);

@Carl Love 

why did you choose h=0,3

why did you put 3 for this questions

@Carl Love 

can you tell me what should I write in maple to get 

expand y(x+h) in taylor serieis 

and also for 

expand y(x-h) in taylor serieis 

@Carl Love do you know how can we expand it in taylor series for part a) in maple 

thanks