For a rectangular channel, Manning’s equation gives the flow rate Q under water height H, width W, channel slope S, and channel roughness n as e kvs (HW)5/3 n (2H + W)2/3 where k = 1 m/3s-1. Write and submit at ht 1 a Mat- lab function that finds W with a fractional error under 10–3 for any given 10-6 < Q< 103 mº s-1,0.01 <H <1 m, 10-4 < 5 < 10-1,0.001 <n< 0.1 Show transcribed image text For a rectangular channel, Manning’s equation gives the flow rate Q under water height H, width W, channel slope S, and channel roughness n as e kvs (HW)5/3 n (2H + W)2/3 where k = 1 m/3s-1. Write and submit at ht 1 a Mat- lab function that finds W with a fractional error under 10–3 for any given 10-6
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