Advertise click here

Buy interactive formula
and personal voice calculator
using your smartphone for only $8.00
ten times cheaper than scientific calculator

I Forgot The Formula - No Worry

subscribe to INVBAT.COM
Formula and Calculator as a Service
by Apolinario (Sam) Ortega

Buy Interactive Formula and Voice Calculator Using Your Smartphone

Available Advertising Spot


Angle Between Two Vectors Reviewer

i j k
Vector A i j k
Vector B i j k

Formula memory recall of vector dot product
Vector A dot product of Vector B

+ + =

| VA| =  ^2 + ^2 + ^2  

| VA| =

| VB| =  ^2 + ^2 + ^2  

| VB| =

Cos θ = / ( * )

θ = ° degree

INVBAT.COM is helping students, teachers, and employees to create their own customized calculator website that will help them to enjoy and not fear a fast coming digital workplace like industrial internet of things and internet of everything powered by machine learning, deep learning, and artificial intelligence. Imagine now you can solve similar problem as shown in above example in less than a minute by using your smarthphone, tablet, laptop or desktop computer. This computational speed is not possible before internet and cloud technology.

Related topic: So what if I can't remember formula and forget how to use calculator?

Enter your subscriber number for example:S1
or webpage number 54 or keyword for example: Quadratic

If you are a subscriber we can create your frequently use keyword, like for example: complex drawing or conversion to make it easy to find.

Then press "Enter" on your keyboard
or click the search button.