An electric current, i, in amps, is given by i=cos(wt)+√8sin(wt), where w≠0 is a constant. what are the maximum and minimum values of i

Just has to be greater than or equal to 0... w and t can never be negative since taking the square root of a negative number yields an imaginary number which would mean imaginary current. Also the question states that w can't be zero but if T is zero than the current will be zero.

Common ratio, exponential function, half-life that's all i have so

Im not really sure if you add or something is that all it says