Rearranging a function. Seems quite basic.

[Matty R]

Hello.

I'm having a bit of trouble with a question I've been given as part of a Maths course, and was wondering if someone could help.

Homework Statement

http://img21.imageshack.us/img21/4920/question6c.jpg

Homework Equations

http://img222.imageshack.us/img222/7092/equations6.jpg

The Attempt at a Solution

http://img22.imageshack.us/img22/1508/attempt6.jpg

As you can see, the function is meant to have +5 on the end, but I get -5. I don't know where I've gone wrong. I did ask the teacher if the 5/4 is just added to the y, and she nodded.

I would appreciate any and all help with this. I know its basic, but its got me.

 

[tiny-tim]

Hello Matty R!

As you can see, the function is meant to have +5 on the end, but I get -5. I don't know where I've gone wrong. I did ask the teacher if the 5/4 is just added to the y, and she nodded.

She meant that you add 5/4 to the original y …

in other words, y is now 5/4 more …

so if y₁ is the first jump, and y₂ the second jump, then y₂ = y₁ + 5/4

 

[Matty R]

http://img21.imageshack.us/img21/3846/donef.jpg

Thank you so much. I'd never have thought of doing that.

I feel a lot better now.