The phrase "a straightforward formula for" is correct and usable in written English.
You can use it when describing a simple and clear method or approach to achieve a specific result or solve a problem.
Example: "The researcher presented a straightforward formula for calculating the area of irregular shapes."
Alternatives: "a simple method for" or "an easy approach to".
Buffett uses a straightforward formula that pays off for anyone who gives it the time, said John Lee Dumas, founder and host of the podcast "Entrepreneur On Fire": "Compound interest plus patience." Read: 21 Surprising Facts You Never Knew About Warren Buffett.
In this study, we developed a high-order averaging method of hydraulic conductivity for accurate numerical modeling of the RE, which has a straightforward formula regardless of the soil conditions and produces high simulation accuracy when used on coarse grids.
Some of the postings stuck to a more straightforward formula: a time, a place, and a suggestive profanity.
Using the classical sample size formula adjusted with the proposed RATIO can provide a straightforward and reliable formula for sample size computation for 2-group comparison of PRO data using Rasch models.
Using the classical formula for normally distributed endpoints along with the proposed ratio only depending on the number of items and the variance of the latent trait can provide a straightforward and reliable formula for sample size computation for subsequent Rasch-based analysis of PRO data.
The American Society of Civil Engineers ASCEE) provides a simple and straightforward empirical formula for fundamental frequencies of buildings in SEI/ASCE 7-05 (ASCE 2005).
Their straightforward formula clearly still works.
Straightforward formulae are provided for computing action on cladding, with special emphasis on the effect of seismic forces, including an extensive general methodology applied to non-structural elements.
The MEP-based straightforward formulas are much more practical for the engineering applications compared with the complicated equations provided by MLP.
