heyy... this week wasn't too bad for me. I understood alot more than I thought I would. I am really good with imaginary numbers. If anyone needs help with it I will be happy to help. All you have to do is memorize the short cut chart that Mrs. Robinson gave us and its a piece of cake. (.25= i) (.5=i^2=-1) (.75=i^3=-i)
(whole #=i^4=1) Always remember to put your answers in a+bi form when solving these types of problems. Also if your given i to the negative power such as...
i^-22
***Remember to put a 1 as the numerator and move the i the -22 to the demoninator. But dont forget when you move it to the denominator it becomes positive.
1/i^22= 1/-1= -1
I could use some help on the homework. I am really struggling with #17 a. and b. on section 2.1. I guess the square roots are throwing me off. I looked at the answers in the back of the book and the answers that im getting will not seem to match up. The problem is....
f(x)=x^3-9x
a.) f(-square root of 2/3)
the answer in the back of the book is
72 square root of 2/ 27.....
I can not figure out how to solve this problem so if anyone can help i would appreciate it!! Thanks so muchh :)
Subscribe to:
Post Comments (Atom)
Good job alicia. Glad to hear it wasn't as bad as you thought.
ReplyDelete