The phrase "useful to demonstrate" is correct and can be used in written English.
It can be used to express the idea that something is helpful or effective in showing or illustrating a particular point. Example: The chart was useful to demonstrate the company's growth over the past year. In this sentence, "useful to demonstrate" is used to convey that the chart was an effective tool or method for illustrating the company's growth.
To aid efficient water management, it is useful to demonstrate how changing land use affects water resources.
It is increasingly unimportant to Alloy whether an idea ever appears in book form: although it can be useful to demonstrate to a network or a studio that a title already has traction in the marketplace, developing a book is time-consuming, whereas an idea for television can be pitched and sold within weeks.
Much of the debate around this generation of "whingers", as she later calls them – slightly naughtily, as she also admits that obviously not every young person is a whinger and the phrase "generation snowflake" is more useful "to demonstrate the closing down of free speech and the demand for attention" – is to do with what has been happening on university campuses in the last decade or so.
This method is useful to demonstrate RT vs overall asynchrony.
Rapid bedside ultrasound is useful to demonstrate the aneurysm and associated free fluid inside the abdomen.
Throughout this paper, we will show that the critical point theory is very useful to demonstrate the existence of solutions of system (1.1).
We conclude that the rat LPS model using IT administration of nanosuspensions of ICS is a useful tool to demonstrate pulmonary-targeted efficacy and to differentiate the side effects.
Interest in these substances has recently been renewed, since the use of placebo-controlled clinical trials has become the most useful tool to demonstrate the efficacy of a particular drug in patients with specific diseases.
Crime and place serves as a useful example to demonstrate the AIC approach to inference for two reasons.
In what follows, we need to prepare some useful lemmas to demonstrate that (N1) and (N2) hold under some imposed conditions.
We expect that this method is nonetheless useful here to demonstrate the effects that potential infrastructure investments may have on accessibility levels.
