MHB How Do You Calculate the Difference Between d and f?

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To calculate the difference between d and f, one must first identify the values of both variables. The discussion emphasizes the need for clarity in the problem presented, as repeated requests for assistance indicate confusion. Participants suggest providing additional context or details to facilitate a solution. The urgency of the request is underscored by the repeated pleas for help. Clear communication and specific information are essential for resolving the query effectively.
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Please Solve this, I am unable. Please, I beg

The question is attached,

I need d - f

Please Help
Screenshot 2021-11-18 at 12.00.49 PM.png
 
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Beer induced query follows.
sfvdsc said:
Please Solve this, I am unable. Please, I beg

The question is attached,

I need d - f

Please Help
View attachment 11488
What have you done so far?
 
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Insights auto threads is broken atm, so I'm manually creating these for new Insight articles. In Dirac’s Principles of Quantum Mechanics published in 1930 he introduced a “convenient notation” he referred to as a “delta function” which he treated as a continuum analog to the discrete Kronecker delta. The Kronecker delta is simply the indexed components of the identity operator in matrix algebra Source: https://www.physicsforums.com/insights/what-exactly-is-diracs-delta-function/ by...

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