The phrase "a closed form formula" is correct and usable in written English.
It can be used in mathematical or scientific contexts to refer to an explicit expression that can be evaluated in a finite number of operations.
Example: "The solution to the equation can be expressed as a closed form formula, allowing for quick calculations."
Alternatives: "an explicit formula" or "a definitive formula".
While the derivation of the optimal schedule is lengthy, the end-result is a closed form formula that is cheap to evaluate.
A closed form formula on the error of approximation is derived to demonstrate the accuracy of the proposed discretization model of fractional derivatives.
We also provide a closed form formula for computing the autocorrelation coefficient for the general FAP, which can be useful as an a priori indicator of the performance of a local search method.
A regression analysis of FEM results is conducted leading to a closed form formula able to predict the remaining strength of pitting corroded plates, where both volume loss and plate slenderness are taken into account.
Our main results include: (a) explicit modelling of repayment and interest-only CWMs; (b) closed form formula for mortgage payment and mortgage balance of a repayment CWM; (c) a closed form formula for the actuarially fair mortgage rate of an interest-only CWM.
Using (30) and Lemma 2, a closed form formula for (y_{k}) is obtained.
We are not aware of any (closed form) formula that may help.
A closed-form formula is provided for estimating effective Young's modulus of damaged woven laminates.
In this paper, we derive a closed-form formula for CDFP using reflection principle under Black Scholes framework.
A mathematical model that offers a closed-form formula for sizing space for occupant flow is developed.
The theory allows us to easily derive a closed-form formula for the action of distant illumination on a Lambertian object, an important special case.
