أسيمبتوتات وفروع الدالة

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Questions and Answers

ما هو الشرط اللازم لتحديد وجود asymptote أفقي؟

  • إذا كانت النهاية عند اللانهاية السالبة مختلفة عن اللانهاية الموجبة.
  • إذا كانت النهاية عند قيمة معينة تساوي اللانهاية.
  • إذا كانت $ ext{lim}_{x o ext{∞}} f(x) = a$ و $ ext{lim}_{x o - ext{∞}} f(x) = a$. (correct)
  • إذا كانت القيمة النهائية تساوي صفر.

ما هو التعبير الرياضي للمستقيم asymptote المنحدر؟

  • $y = mx + c$ حيث $m$ هو الميل.
  • $y = b$ حيث $b$ هو ثابت.
  • $y = ax + b$ حيث $a$ و $b$ أعداد حقيقية. (correct)
  • $y = ax^2 + b$ مع $a eq 0$.

متى يكون للوظيفة asymptote عمودي؟

  • عندما $ ext{lim}_{x o a} f(x) = ext{∞}$ أو $ ext{lim}_{x o a} f(x) = - ext{∞}$. (correct)
  • عندما $ ext{lim}_{x o ext{∞}} f(x) = a$.
  • عندما $ ext{lim}_{x o a} f(x) = 0$.
  • عندما تقترب من $x = a$ من الجانب الأيمن فقط.

ما الشرط اللازم لفتح القطع الناقص إلى اليمين؟

<p>إذا كانت $ ext{lim}_{x o ext{∞}} [f(x) - ax] = ext{∞}$ و $a eq 0$. (C)</p> Signup and view all the answers

ما التعبير الرياضي للـ asymptote الأفقي؟

<p>$y = a$ حيث تمثل $a$ قيمة ثابتة. (D)</p> Signup and view all the answers

ما هو سلوك الدالة عند اقتراب x من اللانهاية السالبة إذا كانت $ ext{lim}_{x o - ext{∞}} [f(x) - ax] = ext{∞}$؟

<p>تفتح في اتجاه اليسار. (A)</p> Signup and view all the answers

ما هو تأثير $ ext{lim}_{x o ext{∞}} [f(x) - 0] = 0$ على شكل الدالة؟

<p>فتح القطع الناقص بشكل أفقي. (C)</p> Signup and view all the answers

ما هو الشرط اللازم لفتح القطع الناقص حول المحور العمودي؟

<p>إذا كانت $ ext{lim}_{x o ext{∞}} [f(x) - 0] = 0$. (C)</p> Signup and view all the answers

Quelle condition doit être vérifiée pour qu'une fonction ait une asymptote horizontale ?

<p>La fonction a une asymptote horizontale si $ ext{lim}<em>{x o ext{∞}} f(x) = a$ et $ ext{lim}</em>{x o - ext{∞}} f(x) = a$.</p> Signup and view all the answers

Qu'est-ce qui indique la présence d'une asymptote verticale ?

<p>Une asymptote verticale existe si $ ext{lim}<em>{x o a} f(x) = ext{∞}$ ou $ ext{lim}</em>{x o a} f(x) = - ext{∞}$.</p> Signup and view all the answers

Quand une fonction possède-t-elle une asymptote oblique ?

<p>Une asymptote oblique est présente si $ ext{lim}<em>{x o ext{∞}} [f(x) - (ax + b)] = 0$ et $ ext{lim}</em>{x o - ext{∞}} [f(x) - (ax + b)] = 0$.</p> Signup and view all the answers

Qu'indique un comportement de la fonction où $ ext{lim}_{x o ext{∞}} [f(x) - ax] = ext{∞}$ ?

<p>Cela indique que la fonction a une parabole qui ouvre vers la droite avec l'équation $y = ax$ lorsque x approche l'infini.</p> Signup and view all the answers

Que signifie une asymptote lorsque $ ext{lim}_{x o - ext{∞}} [f(x) - ax] = ext{∞}$ ?

<p>Cela signifie que la fonction possède une parabole qui ouvre vers la gauche avec l'équation $y = ax$ lorsque x approche de l'infini négatif.</p> Signup and view all the answers

Quelle est la condition pour une parabole qui ouvre vers l'axe horizontal ?

<p>Une parabole s'ouvrant vers l'axe horizontal se produit si $ ext{lim}_{x o ext{∞}} [f(x) - 0] = 0$.</p> Signup and view all the answers

Dans quel cas une parabole ouvre-t-elle vers l'axe vertical ?

<p>Si $ ext{lim}_{x o ext{∞}} [f(x) - 0] = 0$, la fonction a une parabole qui ouvre vers l'axe vertical.</p> Signup and view all the answers

Pourquoi est-il important de vérifier les limites des deux côtés d'un point pour une asymptote verticale ?

<p>Il est important de vérifier les limites des deux côtés pour assurer que la fonction s'approche de l'infini au point a, ce qui confirmera l'existence de l'asymptote.</p> Signup and view all the answers

Flashcards

Horizontal Asymptote

A horizontal line that the function approaches as x approaches positive or negative infinity.

Vertical Asymptote

A vertical line that the function approaches, but never crosses, as x approaches a specific value.

Slanted Asymptote

A slanted line that a function approaches as x approaches positive or negative infinity.

Parabola Opening to Right

The function approaches a parabola opening to the right as x approaches positive infinity.

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Parabola Opening to Left

The function approaches a parabola opening to the left as x approaches negative infinity

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Limit as x approaches infinity

The value that a function approaches as x gets very large or very small.

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Limit at a Vertical Asymptote

Must be taken from both sides (left and right) to establish the nature of the Vertical Asymptote.

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Function Behavior

The analysis of how a function behaves at different values of x. This includes analyzing horizontal and vertical asymptotes, as well as branches based on limits.

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Horizontal Asymptote

A horizontal line y = a; a function approaches as x approaches positive or negative infinity

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Vertical Asymptote

A vertical line x = a; function approaches infinity or negative infinity as x approaches 'a' from both sides

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Slanted Asymptote

A slanted line y = ax + b; the function approaches as x approaches positive or negative infinity

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Parabola Opening Right

The function approaches a parabola that opens to the right as x approaches infinity

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Parabola Opening Left

The function approaches a parabola that opens to the left as x approaches negative infinity

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Limit as x->∞

The value a function approaches as x gets very large or very small

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Limit at Vertical Asymptote

Must be taken from both sides (left and right) to ensure the vertical asymptote exists

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Function Analysis

Examining limit behavior of function, including asymptotes (horizontal, vertical, slanted), and branch directions

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Study Notes

Asymptotes and Branches of a Function

  • Horizontal Asymptote: A function has a horizontal asymptote of equation y = a if the limit of the function as x approaches positive or negative infinity is a. (lim f(x) = a as x → ±∞)

  • Vertical Asymptote: A function has a vertical asymptote of equation x = a if the limit of the function as x approaches a from either side (left or right) is positive or negative infinity. (lim f(x) = ∞ or -∞ as x → a)

  • Oblique Asymptote: A function has an oblique asymptote if the limit of the function minus an equation of the form (ax+b) is a finite value as x approaches ±∞. The equation of the oblique asymptote is y = ax+b

  • Parabola Branches:

    • Parabola branch directed to the right (x-axis): The function will have a parabola branch directed to the right of the y-axis if the limit of (f(x) - ax) = b as x approaches ±∞. The equation of this branch is y = ax+b
    • Parabola branch directed towards to the x-axis (abscissa): If lim f(x)/x as x approaches ±∞ is zero, and f(x) is close to zero.
    • Parabola branch directed towards to the the y-axis (ordinate): If the limit of f(x)/x as x approaches ±∞ is zero, and f(x) is close to zero.

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