Pregunta
upstudy study bank question image url

The (complex) solutions of the equation \( 2 z^{2}+2 i z-5=0 \) are \( \ldots \) \( \begin{array}{l}z_{1}=-1.5-0.5 i \text { and } z_{2}=1.5+0.5 i \\ z_{1}=-0.5-1.5 i \text { and } z_{2}=0.5+1.5 i \\ z_{1}=-1.5-0.5 i \text { and } z_{2}=1.5-0.5 i \\ z_{1}=1.5+0.5 i \text { and } z_{2}=1.5-0.5 i\end{array} \)

Ask by Barrett Luna. in the United States
Mar 02,2025

Solución de inteligencia artificial de Upstudy

Respuesta verificada por el tutor

Responder

The solutions are \( z_{1} = -1.5 - 0.5i \) and \( z_{2} = 1.5 - 0.5i \).

Solución

We start with the quadratic equation   2z² + 2iz – 5 = 0. Using the quadratic formula   z = [–b ± √(b² – 4ac)] / (2a), with a = 2, b = 2i, and c = –5, we get   z = [–2i ± √((2i)² – 4·2·(–5))] / (2·2). Step 1. Compute b²:   (2i)² = 4i² = –4. Step 2. Compute the discriminant:   b² – 4ac = –4 – [4·2·(–5)] = –4 + 40 = 36. Step 3. Take the square root of the discriminant:   √36 = 6. Thus, the solutions are   z = (–2i ± 6) / 4. This gives two solutions:   z₁ = (–2i + 6) / 4 = (6 – 2i)/4 = (3 – i)/2,   z₂ = (–2i – 6) / 4 = (–6 – 2i)/4 = –(6 + 2i)/4 = –(3 + i)/2. Now we convert these into decimal form:   (3 – i)/2 = 1.5 – 0.5i,   –(3 + i)/2 = –1.5 – 0.5i. Looking at the answer choices provided, the option   z₁ = –1.5 – 0.5i and z₂ = 1.5 – 0.5i matches our solutions (note that the order of the solutions doesn’t matter). Thus, the correct answer is:   z₁ = –1.5 – 0.5i and z₂ = 1.5 – 0.5i.

Respondido por UpStudy AI y revisado por un tutor profesional

error msg
Explicar
Simplifique esta solución

Beyond the Answer

To solve the equation \( 2 z^{2}+2 i z-5=0 \), we can use the quadratic formula \( z = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a} \). Here, \( a = 2 \), \( b = 2i \), and \( c = -5 \). Calculating the discriminant gives us \( b^2 - 4ac = (2i)^2 - 4(2)(-5) = -4 + 40 = 36 \). Thus, \( z = \frac{-2i \pm 6}{4} \), leading to two solutions: \( z_1 = -1.5 - 0.5i \) and \( z_2 = 1.5 + 0.5i \). In real-world applications, solving complex equations can model systems in electrical engineering and quantum mechanics, where impedances and wave functions often yield complex numbers. By understanding these solutions, engineers can analyze and predict circuit behavior, while physicists can describe particle states, benefiting technological advancements in computing and telecommunications.

¡Prueba Premium ahora!
¡Prueba Premium y hazle a Thoth AI preguntas de matemáticas ilimitadas ahora!
Quizas mas tarde Hazte Premium
Estudiar puede ser una verdadera lucha
¿Por qué no estudiarlo en UpStudy?
Seleccione su plan a continuación
Prima

Puedes disfrutar

Empieza ahora
  • Explicaciones paso a paso
  • Tutores expertos en vivo 24/7
  • Número ilimitado de preguntas
  • Sin interrupciones
  • Acceso completo a Respuesta y Solución
  • Acceso completo al chat de PDF, al chat de UpStudy y al chat de navegación
Básico

Totalmente gratis pero limitado

  • Solución limitada
Bienvenido a ¡Estudia ahora!
Inicie sesión para continuar con el recorrido de Thoth AI Chat
Continuar con correo electrónico
O continuar con
Al hacer clic en "Iniciar sesión", acepta nuestros términos y condiciones. Términos de Uso & Política de privacidad