Solving Ratio-Dependent Predator-Prey System with Constant Effort Harvesting 
                        Using Homotopy Perturbation Method

<table>Population fraction versus time for Case
4: <svg height="10.9125" id="M50" style="vertical-align:-0.17555pt" version="1.1" viewbox="0 0 45.424999 10.9125" width="45.424999" xmlns="http://www.w3.org/2000/svg">
<g transform="matrix(1.25,0,0,-1.25,0,10.9125)">
<g transform="translate(72,-63.27)">
<text transform="matrix(1,0,0,-1,-71.95,63.5)">
<tspan style="font-size: 12.50px; " x="0" y="0">𝑟</tspan>
<tspan style="font-size: 12.50px; " x="8.5645552" y="0">=</tspan>
<tspan style="font-size: 12.50px; " x="20.604944" y="0">0</tspan>
<tspan style="font-size: 12.50px; " x="26.856443" y="0">.</tspan>
<tspan style="font-size: 12.50px; " x="29.982195" y="0">2</tspan>
</text>
</g>
</g>
</svg>: (—) prey population
fraction; (<i>◦ </i><i></i><i>◦ </i><i></i><i>◦</i>) predator
population fraction.</table>

Mathematical Problems in Engineering

fig4

Figure 4

Figure 4: Solving Ratio-Dependent Predator-Prey System with Constant Effort Harvesting 
                        Using Homotopy Perturbation Method 

Mathematical Problems in Engineering

Solving Ratio-Dependent Predator-Prey System with Constant Effort Harvesting Using Homotopy Perturbation Method

Figure 4