Over a million students use our free study notes to help them with their homework
Overview: Differentiation
Differentiation is a very useful mathematical technique extensively...
When you differentiate an equation, you're finding theACAnswered by Anna C. • Maths tutor13179 Views
If y is a function of u, which itself is a function of x, then
dy/dx=(dy/du) x (du/dx)
Differentiate the outer function and multiply by the derivative of the inner function.
...
let y=2x {take natural logs of both sides}
cos2x= 2cos^2x - 1
2cos^2x - 1 - 5cosx = 2
Let cosx = y
2y^2 - 5y - 3 = 0
(2y + 1)(y + 3) = 0
y = -1/2 or -3
cosx = -1/2 or -3
x = 120 degrees
←
703
704
705
706
707
→
Internet Safety
Payment Security
Cyber
Essentials
Comprehensive K-12 personalized learning
Immersive learning for 25 languages
Trusted tutors for 300 subjects
35,000 worksheets, games, and lesson plans
Adaptive learning for English vocabulary
Fast and accurate language certification
Essential reference for synonyms and antonyms
Comprehensive resource for word definitions and usage
Spanish-English dictionary, translator, and learning resources
French-English dictionary, translator, and learning
Diccionario ingles-espanol, traductor y sitio de apremdizaje
Fun educational games for kids
