math analysis, and UC admission question.

<p>I've taken the minimum 3 year requirements for math,but decided to go for the extra year in my junior year of high school and took math analysis.The first semester i got a B,the second a D.I am currently retaking the course to make up the D,but i am failing the class at the moment.So i came here for advice,should i continue the course?Would this backfire on me for not attempting to take the course again?How would this effect me from going into a UC such as UCI,UCLA,or USSB?
P.S Im doing the whole year,since math analysis isn't a type of subject when you could simply jump into the second semester.</p>