Let x(t) be a periodic signal with fundamental period T0 and Fourier series coefficients 푎푎푘푘. Derive the Fourier series coefficients of the following signal in terms of 푎푎푘푘: (31)xt−Hint: Consider (1)xt− and (3 )xt ( what is the period of this signal?) separately first, then tackle(31)xt−.

1. what expression would be the same as 6x+x+0 2. find the prime factorization of 60 3. write the expression for 6 + x in words.

Scores on a university exam are normally distributed with a mean of 78 and a standard deviation of 8. the professor teaching the class declares that a score of 70 or higher is required for a grade of at least “c.” using the 68-95-99.7 rule, what percentage of students failed to earn a grade of at least “c”?

Reinel saves 30% of every pay check. his paycheck last week was 560$. how much did reniel save last week?