$($d$)$ According to IS $800-2007,$ the flexural strength $M_{dv}$ of a member subjected to high shear force is given by the following formula. What is $M_d$ and $M_{fd}?$ Justify the reasoning for the limit $1\mathrm{.}2Z_e\frac{f_y}{{}_{m0}}[2+2]$

$M_{dv}=M_d-(M_d-M_{td})1\mathrm{.}2Z_e\frac{f_y}{{}_{m0}}$ where $=(2\frac{V}{V_d}-1{)}^2$