Proving Solutions of Linear Transformations Using Kernel and Fixed Vectors

[laminatedevildoll]

\ Let T: V \rightarrow W be a linear transformation, let b \in Wbe a fixed vector, and let x_0 \in V be a fixed solution of
T(x)=b. Prove that a vector x_1 \in Vis a solution of T(x)=b, if and only if x_1is of the form x_1=x_h +x_0where x_h \in kerT

I started out by saying that

x_i \in X_i

(x_1... x_n) \in \prod (where i=1 and h is at the top) X_0

(x_1... x_n) \in \prod X_i

x_i \in X_i \rightarrow x_1 is not equal to the empty set for all i.

I am not sure if I am doing this right. I'd appreciate any feedback.

 

[Hurkyl]

You're looking for these:

\neq \emptyset

\prod_{i=1}^{h}

\ker T

 

[mathwonk]

to see if you are right, ask yourself if your argument is logically convincing. it is crucial to be able to decide for yourself, if such arguments are correct. i.e. practice playing both roles, argue it then ask if it could possibly be wrong, then answer yourself.

 

[laminatedevildoll]

I think that it's convincing, but sometimes I find it hard to convince myself that it's right because I doubt myself all the time.

 

[mathwonk]

well that's the goal to achieve. to reduce your arguments to logic so simple and clear that you can persuade yourself that you must be right. keep practicing.