Effects of Internet Sales Promotion on a Differential Advertising Model

<div>(a) The period-<svg height="9.01194pt" id="M317" style="vertical-align:-0.04981995pt" version="1.1" viewbox="-0.0498162 -8.96212 14.6751 9.01194" width="14.6751pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.013,0,0,-0.013,0,0)"><path d="M456 178V225H360V632H320C217 496 115 347 20 206V178H280V106C280 40 276 34 189 27V0H445V27C364 34 360 39 360 106V178H456ZM280 225H82C149 335 214 431 278 520H280V225Z" id="g113-53"></path></g><g transform="matrix(.013,0,0,-0.013,6.24,0)"><path d="M620 675H597C578 656 570 650 541 650H144C112 650 104 653 94 675H72C59 618 42 552 23 493L53 491C71 534 88 564 105 585C124 608 144 615 238 615H290L197 121C182 40 174 34 88 28L82 0H361L367 28C275 34 266 38 281 121L374 615H441C522 615 543 608 553 583C562 560 566 531 565 493L597 494C603 551 612 629 620 675Z" id="g113-85"></path></g></svg> solution of (<a href="https://static.hindawi.com/articles/ddns/volume-2018/8618146/figures/#EEq561">39</a>) with <span 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href="https://static.hindawi.com/articles/ddns/volume-2018/8618146/figures/#EEq561">39</a>) with <span class="nowrap"><svg height="9.49473pt" id="M319" style="vertical-align:-0.2063999pt" version="1.1" viewbox="-0.0498162 -9.28833 42.9081 9.49473" width="42.9081pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.013,0,0,-0.013,0,0)"><path d="M452 333C452 398 425 448 375 448C329 448 235 404 140 292H138L229 683C233 701 234 712 225 712C208 712 149 686 66 677L64 652H97C135 652 140 651 129 598L38 167C23 96 29 57 44 33C60 7 98 -12 132 -12C169 -12 232 3 290 41C383 102 452 223 452 333ZM365 316C365 199 308 87 239 49C221 39 200 35 183 35C137 35 99 70 112 163C116 191 123 215 129 233C190 316 290 392 330 392C348 392 365 372 365 316Z" id="g113-99"></path></g><g transform="matrix(.013,0,0,-0.013,9.733,0)"><path d="M535 323V373H52V323H535ZM535 138V188H52V138H535Z" id="g117-34"></path></g><g transform="matrix(.013,0,0,-0.013,20.996,0)"><path d="M447 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Discrete Dynamics in Nature and Society

fig4

Figure 4

Figure 4: Effects of Internet Sales Promotion on a Differential Advertising Model 