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If ๐‘ง=2๐‘ฅ-๐‘ฆ๐‘ฅ+๐‘ฆ, find โˆ‚๐‘งโˆ‚๐‘ฆQuestion 2Answera.3๐‘ฅ๐‘ฅ+๐‘ฆ2b.-3๐‘ฅ๐‘ฅ+๐‘ฆ2c.-2๐‘ฅ-1๐‘ฅ+1d.-2๐‘ฅ-1๐‘ฅ+๐‘ฆ

Question

If ๐‘ง=2๐‘ฅ-๐‘ฆ๐‘ฅ+๐‘ฆ, find โˆ‚๐‘งโˆ‚๐‘ฆQuestion 2Answera.3๐‘ฅ๐‘ฅ+๐‘ฆ2b.-3๐‘ฅ๐‘ฅ+๐‘ฆ2c.-2๐‘ฅ-1๐‘ฅ+1d.-2๐‘ฅ-1๐‘ฅ+๐‘ฆ

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Solution

Para encontrar โˆ‚๐‘ง/โˆ‚๐‘ฆ, primero debemos aplicar la regla del cociente a la funciรณn ๐‘ง = (2๐‘ฅ - ๐‘ฆ) / (๐‘ฅ + ๐‘ฆ).

La regla del cociente establece que si tenemos una funciรณn de la forma ๐‘ข/๐‘ฃ, su derivada es:

(๐‘ข/๐‘ฃ)' = (๐‘ข'๐‘ฃ - ๐‘ข๐‘ฃ') / ๐‘ฃยฒ

En este caso, ๐‘ข = 2๐‘ฅ - ๐‘ฆ y ๐‘ฃ = ๐‘ฅ + ๐‘ฆ.

Primero, derivamos ๐‘ข y ๐‘ฃ con respecto a ๐‘ฆ:

๐‘ข' = โˆ‚(2๐‘ฅ - ๐‘ฆ)/โˆ‚๐‘ฆ = -1 (ya que 2๐‘ฅ es constante respecto a ๐‘ฆ y la derivada de -๐‘ฆ es -1)

๐‘ฃ' = โˆ‚(๐‘ฅ + ๐‘ฆ)/โˆ‚๐‘ฆ = 1 (ya que la derivada de ๐‘ฅ es 0 y la derivada de ๐‘ฆ es 1)

Ahora aplicamos la regla del cociente:

โˆ‚๐‘ง/โˆ‚๐‘ฆ = (๐‘ข'๐‘ฃ - ๐‘ข๐‘ฃ') / ๐‘ฃยฒ = [(-1)(๐‘ฅ + ๐‘ฆ) - (2๐‘ฅ - ๐‘ฆ)(1)] / (๐‘ฅ + ๐‘ฆ)ยฒ = [-๐‘ฅ - ๐‘ฆ - 2๐‘ฅ + ๐‘ฆ] / (๐‘ฅ + ๐‘ฆ)ยฒ = [-3๐‘ฅ] / (๐‘ฅ + ๐‘ฆ)ยฒ = -3๐‘ฅ / (๐‘ฅ + ๐‘ฆ)ยฒ

Por lo tanto, la respuesta correcta es:

b. -3๐‘ฅ / (๐‘ฅ + ๐‘ฆ)ยฒ

This problem has been solved

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