MATLAB: Diffrence of vector element and addition element- wise

Question

hi!

i have a vector

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A=[1 2 3 98 99 102]

i calculate the difference betwen thelement with the function diff

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B=[ 1     1    95     1     3]

how could i manipulte vector A in this manner

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BB=[A(1)    A(1)+B(1)*5    A(2)+B(2)*5  A(3)+B(3)*5   ....A(5)+B(5)*5]

Thank you!

Answer 1

A=[1 2 3 98 99 102];
BB = [A(1) ( A(1:numel(A)-1) + diff(A) ).*5]