4 ( 1,75 y \quad 3,5 ) + 1,25 y
Evaluate
\frac{5y}{4}+\frac{7y_{3}}{2}
Differentiate w.r.t. y_3
3,5
Graph
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7y_{3}\times 0,5+1,25y
Multiply 4 and 1,75 to get 7.
3,5y_{3}+1,25y
Multiply 7 and 0,5 to get 3,5.
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