Could somebody please prove these identities and explain a little bit ? I just can't figure them out.
sinh^-1x = ln(x + sq.rt of(x^2 + 1))
cosh^-1x = ln(x + sq.rt of (x^2 + 1))
tanh^-1x = (1/2)ln ( (1+x)/(1 - x) )
Could somebody please prove these identities and explain a little bit ? I just can't figure them out.
sinh^-1x = ln(x + sq.rt of(x^2 + 1))
cosh^-1x = ln(x + sq.rt of (x^2 + 1))
tanh^-1x = (1/2)ln ( (1+x)/(1 - x) )