In class we developed a relationship between the RC time constant in the relaxation oscillator and it frequency. How would you estimate the time constant in part $2$ and what is the relationship between these two quantities? Test the time constant and frequency relationship, by changing the capacitor such that the output of the circuit should be $15$K Hz$.$ Test the capacitor value you found by placing it in your LTSpice circuit and running a simulation of it$.(10$ points$)$