CASIO PRIZM FX-CG50 Color Graphing Calculator

Comes with its USB cable (mini) and protective sliding panel, but the case has to be ordered separately.

This is my favourite calculator that is highly recommended for above GCSE (or for super keen GCSE students too) and all professionals like engineers and scientists.But I have a lot of recommendations for Casio for the next CG50:Show the derivative in X or Y solver, not just in trace in the graph mode.Provide dy/dx solver in graphing app so that x/y value can be found for a given gradient... and also for a given second derivative.Provide a gsolve option to identify points of inflections in the graph. And even identify concave and convex areas in different colour.Allow parametric equation solve features just like normal cartesian graph gsolve features as none of the g solve soft keys work at the moment when it comes to parametrically defined curves. Allow us to do everything including finding areas.Please move the radian degrees item to first on the list of settings as we have to frequently switch between degrees or radians and it requires too many key strokes.We can find the tangent/normal to a graph using sketch option but the equation of the tangent/normal cannot be pasted into the graphing app as a curve. If we could than it would be easier to find where the normal/tangent intersects other key points.Please allow us to adjust the font size.The bottom keys of the CG50 have been shaven off at an angle compared to the Classwiz 991EX. The height of the area we press is less. This makes key presses less comfortable than classwiz 991EX. Please could you restore full size.Allow recurring decimals option where we can enter and convert between recurring decimals and other formats.Allow us to find prime factors of a number, as other less advanced Casio's do.Allow calculations of volumes of revolution, and 3D depiction of volumes of revolutions.Conics app is isolated from graph app and is really not that useful... we need to be able to plot tangents or other curves with the circles to find intersections with the circle etc.Importantly, please could you allow us to define a cartesian graphs IMPLICITLY... the grapher becomes useless when an equation is implicitly defines. Other calculators are able to show implicit graphs. This allow circles to be plotted easily without a separate conics app.The new distribution app is almost useless in an exam conditions or computations setting. This is because it lacks all the features for calculating but visually shows the distribution (useful), which means you need to be in the stats app for calculations. So to make the ability to see the distribution accessible, I would like the option to visually see my distributions where I am doing my calculations (stats ap) and not have an isolated distribution app to go to. Please integrate the distribution ap features in the stats app. Infact, the z distribution shows in the stats ap. Please integrate the distributions app this way.When we get an answer for a probability in the stats ap, please allow us to copy / store in a variable like x/ANS so we can move to main and use that value for the probability in a calculation... often we have to remember a string of digits to copy.Transformation of 3D images in geometry app will be very useful.Please allow us to copy the ANSWERS from intermediate calculations in main rather then just the calculations line... this is a really annoying omission from the calculator.Also sometimes calculations line that used ANS in the calculation does not contain the answer from the part before if further calculations were executed...a software method to detect this would be nice where it takes the answer from the line before.Enable Spearman’s rank correlation coefficient calculations in the stats ap.Allow access to all Statistical Table of values (eg. Critical values) for all types of distribution such as for critical values for Hypothesis testing for zero correlation of bivariate data - PMCC values vs significance level and sample size. Allow us to access stats data as we still have to use a book to access these stats data, it should be in CG50, if it has a periodic table it should have this.Allow the stats app to perform Hypothesis testing for different distributions by taking all the required parameters (like numworks calculator does).Allow Negative binomial distribution function in the statistics aps.Recursion web graph does not start at the table start, please fix this.List commands have to be executed in main rather that in the stats app making it difficult for use.Again, please bring the ANS key to CG50 like the classwiz.Square root should also ideally be a direct key and not a shift operation.When we select a function operation using soft keys in main and it appears on the screen, knowing the syntax is often a problem, find a way to quickly view the syntax of the operation.Some of the vector operations and vector input are in different locations, bring them in a coherent place.Provide decametres and decimetres for length conversion.A dark mode option.