Use Eqs. (4.1.7) to plot the shape functions N1 and N3 and the derivatives (dN2=dx) and...

Use Eqs. (4.1.7) to plot the shape functions N₁ and N₃ and the derivatives (dN₂=dx) and (dN₄/dx), which represent the shapes (variations) of the slopes φ₁ and φ₂ over the length of the beam element.

Eqs. (4.1.7)