$15\mathrm{.}6$ Beam Deflection $v(x)$ using INTEGRATION

Assuming El is constant along beam, use the integration method to calculate the elastic curve, $v(x).$

Hint: My answer has two different equations, one for $0x3,$ and one for $3x8.$ And it took a good bit of algebra $($and clever recall of my high school functions class$)$ to even get to the $M(x)$ equations you'll need to integrate.