Матрица Гессе для функции u = x<sup>2</sup> + y<sup>2</sup> + z<sup>2</sup> – 2x – 6y имеет вид:<img src="/close/store/examRes/%7B8EDF8AC7-83A5-4CA4-B389-ED9C5A73AF15%7D/CG81.JPG" /><img src="/close/store/examRes/%7B8EDF8AC7-83A5-4CA4-B389-ED9C5A73AF15%7D/CG83.JPG" /><img src="/close/store/examRes/%7B8EDF8AC7-83A5-4CA4-B389-ED9C5A73AF15%7D/CG84.JPG" /><img src="/close/store/examRes/%7B8EDF8AC7-83A5-4CA4-B389-ED9C5A73AF15%7D/CG82.JPG" /> <img src="/img/90/35e736e08ed0d67fc770bdf753.jpg" />, <img src="/img/1c/f859ed18ff28184993b1a7c0f1.jpg" />, <img src="/img/44/86a83c3a1a21f6f7efbad8f88e.jpg" />, <img src="/img/c1/77b4cef7fedbc835f6b063a7b1.jpg" />