David Sang and Graham Jones Solutions for Chapter: Superposition of Waves, Exercise 2: Question

On graph paper, draw two 'triangular' waves similar to those shown in Figure. (These are easier to work with than sinusoidal waves.) One should have wavelength $8.0 \mathrm{cm}$ and amplitude $2.0 \mathrm{cm}$. The other should have wavelength $16.0 \mathrm{cm}$ and amplitude $3.0 \mathrm{cm}$

Use the principle of superposition of waves to determine the resultant displacement at suitable points along the waves, and draw the complete resultant wave.