Symbol
Problem
Find the directional derivative of $αx,y.z\right)=x^{2}yx+4x$ $at$ $\left(1-21\right)$ in the direction of $2i-1-2k$
Algebra
Search count: 116
Solution
Qanda teacher - Bhanu
Student
which one is correct
Qanda teacher - Bhanu
you can see the solution
Answer given in book is many a times wrong.
You shouldn't believe blindly
better to go with solution
Student
Qanda teacher - Bhanu
There might be some calculation mistake, let me check again. But, procedure is 200%correct.
Student
sir I tried using my mams method ...is this correct??
which method is this??
Qanda teacher - Bhanu
I am not getting this method
seems to be correct
Student
but they teach us only this method
Qanda teacher - Bhanu
There are many methods
teachers used to teach as per their convenience
I have also choosen as per my convenience
Student
this is the problem of engineering mathematics 3
Qanda teacher - Bhanu
There is no hard and fast rule
yeah I understand
Student
kk sir ...thanku for your kind information
Qanda teacher - Bhanu
welcome